Local merchants do a box section HD lintel with 50 kn UDL for about 40 quid. Bearing should be 'solid'. 60 metre garage out of 6 inch solids, the span of the door is 4. Do not attempt to join lintels. Drill hole- fix bracket with a twin thread 4. The other (identical) opening has to support an existing 250x250 steel beam (at 90 degrees) that is currently supporting an upstairs wall which in turn supports the wall plate which has the roof on it and. , Mar 18, 2005. The hip roof trusses are 1. Either dot and dab plasterboard to the reveals square to the window to narrow the gap, dot and dab plasterboard at an angle (my preferred choice) to the window and reveals, batten out the reveals and plasterboard, or wet plaster/render it, but you'll need lots of aapplications and it will take weeks to dry out fully. 1. Galintel 85mm x 7mm x 1400mm Galvanised Flat Lintel Flat Bar (0) $47. Buy Resins at Screwfix. Without doing research into current regulations, based on my experience alone I’d suggest you will definitely need a 600mm lintel and with a cavity tray and weep vents above. (79 products) Builders metalwork consists of a number of metal products essential to a wide range of construction projects. Begin by drilling a shallow hole on low power before increasing the speed and engaging the hammer feature. And some on the lower floor if solid, would be a good idea with board spanning the floor joists at right angles. D. Screw a wood trimer over it, and secure the new timber work to that. Use either lintel or angle iron between brackets. There are timber lintels throughout. I've got to a few heavy blinds to top fix so need a reliable screw that won't snap when screwing into metal lintels or fail when the blinds are being used. Unless it's an unusually wide doorframe, don't bother with mechanical fixings in the head, once frame is fixed in position through the jambs, squirt expanding foam all around the back and head to close any gaps, insulate and further secure in position, it'll. It's not just a question of replacing the lintel either. this has left a gap between the lintel and brickwork above to be around 2” one side and about 3/4” the other side. The overhang is approx 130mm each end - googled it and. $172 11. 8m) Rather more than a rotten piece of timber strength of not much more than 0kN/m, with the. downstairs bay window frame is cracking and was also fitted on to loose brick work which the company just repointed . The builder gave a fixed price quote. 8m long to accommodate the other window. The window is 2440mm so looking to install a 2850 Birtley LA lintel giving me 205mm on each side. CGN Screwfix Select. Depth 130mm. With concrete up top, a prestressed concrete lintel would not look out of place. bigjules New Member. Attached Files: 2BC8545F-100F-48A7-9071-1FF1D5B8DBCC. As you can see there is a metal lintel above the doorway and it’s bedded into the wall I’m not removing and also laid on top of the lintel for the other doorway. Perhaps a better question would be are most/all window lintels no higher than a course of bricks - i. The brickwork opening size is 4755mm. 99 Inc Vat Click & Collect Delivery OX Trade XL-10 Masonry Segmented Diamond Blade 300mm x 20mm (216HP) compare For Disc Cutters For General Masonry, Paving Bricks, Hard Stones, Kerbs & Lintels Sintered £27. stevie22 Screwfix Select. com. replace lintel and then have the joints repointed to ensure integrity between bricks. 2 = 2kN/m run of lintel so provided the lintel you are proposing quotes a Safe Working Load greater than this then all is good. £15. In the days before lintels, you will always see a relief arch about 4 courses above an opening. Hi, I'm in a predicament with what lintel to put above a garage door, im currently building a 5. I looked at the wall,at the end of the lintel and discovers it to be soft so upon pushing the plaster off,behind it was newspaper Which I pulled out and it left a. 5m window. Step 3 - Remove center prop and fill with mortar repeat for props left and right, wait 5 days. You will need a lintel calculated for the new length. A standard brick is 102mm wide. There has obviously been a timber lintel there before the pvc cowboys came along and fitted the existing door. 1 windows lintel looks a little rotten so I am thinking it will need replacing. A concrete lintel is not designed to be a acrow, you are well out of your depth. The lintel will need replacement as it carries the roof weight almost directly with not many courses of brick above for buffering and spreading the weight. There isn't a big enough clearance for the key to miss the lintel. Concrete lintel would be absolutely fine. This method takes minutes - lintels and 2 pours takes hours!Hi I have a small room on the front of our house which has has what looks like two lintels put in, however I wanted to put a stud wall in attaching the head bar to one of the lintels. The wall was a double skin wall, originally the external wall to the house and therefore load bearing. Above my lintels in my new extension, would you advise fitting Weep Ventilators along the lintel (or "Peep" Weeps Ventilators)? If so, what should the spacing between them be - I have a 1200 opening and a 1800 opening (lintels are 1500 and 2100 respectively). 5 for the floor load and doesn't leave much for the brickwork and any roof loads on the wall. The house itself is a 1930s terraced. As you can see there are 2 damaged aerated blocks on the inner leaf and one damaged on the outer leaf underneath the 150mm bearing of the lintel. I am using an SDS drill with 5mm drill bit. The project has secured Building Consent from local planning although there has been no. Home Forums > Screwfix Community Forum > Builders' Talk > Lintel alternative? Discussion in 'Builders' Talk' started by mcooper2406, Jun 23, 2019. Nearly every switch drop that is within 6" of the doorway will have been notched into the lintel unless the plaster was thick enough to conceal the trunking/conduit. 5 masonry bit to punch through as this saves your nice sharp HSS bit from being blunted as you ram it throught the lintel into brickwork. 8 x 0. I was going to ensure each end of whatever lintel that I get is embedded in the wall by at least 150mm each side. Buy a few and return them if it turns out that they weren't needed. Pick a joint line and follow that. Put the required lintel spec on a B&Q trade note pad. stuart44 Screwfix Select. #2. (Each end of course!!) bigjules, Feb 19, 2008. Discussion in ' Builders' Talk ' started by zak99, Apr 20, 2013 . The lintel sounds hollow when tapped and doesn't seem to be any bricks above it - went into loft - no insulation above and just seems to be boards. Would anyone know if there is an issue and what I should expect to pay to get it sorted. Do I need a new full length steel lintel bridging the whole length, inside and out. Therefore I think careful considered drilling will cause no problems. I can see that the brick work above the doors sags a bit in the middle, it was like this before but is something that i. Im after an opinion on the attached photo. I have an idea to use steel angle brackets to attach to the lintels and shed, but what would be a good way to attach the brackets to the top of the lintel, it will need to. Joe1985 Guest. you are asking a question that can not be answered over the net, a little stupid me thinks. 2m. 1 - 210x100x1800 lintel how I originally wanted flat side down (need to be absolutely sure it will be the right way to take stress of weight above) 2 - make opening in front face of bricks above lintel and locate stack. 4 metres. Break out the lintel with a kango in pieces. JED, Dec 10, 2004. John Levit said: ↑. I also see on some lintel' manufacture website, they. I’ve got concerns about how the lintel has been supported. e. Bearings at each end must be at least 150mm. Home Forums > Screwfix Community Forum > Builders' Talk > Lintel type. #1. Hi I want to increase the width of a doorway. When knocking through the builders put a concrete lintel on the brick wall side but on the other wall (breezeblock I think!) the wall is supported by wood. I was worried if i needed anymore width. Nowadays they are often pre-stressed in the neutral plane. 30 day money back guarantee. The fact that you have wooden lintels suggests that your house was constructed before WW2, in which case, it will have used lime mortar for the brickwork. There are 2 main types, composite and non composite. When he finally turned up on site, he said the existing lintel wasn’t big enough and we’d need a new lintel. I would have expected to use accro props with strong bows min of 3 for the big one. Originally it was an open fire when the house was built (around 1850) and then circa 1990s it was changed to a wood burner. Non composite are designed to take point loads, for example a joist sitting straight on top, composite need 3 courses of brickwork first. This supports 2 seperate steel lintels. 3m span is on your lintel that is 1. I would arrange for someone to come and certify him. Wooden lintels work just fine - unless you render the outside of your house with Portland cement. . This goes in about 20 mm and then hits something and the drill can not make further progress. i am planning on rebuilding a calssic car and would like to make this a single opening door. £177. Walls approx 2. (1)Chop it out and build a brick arch over the actual fireplace, no lintel required, brick up sides as normal. £29. Busterhymen Active Member. stevie22 Screwfix Select. I can't use battens side or face fix. Richard_, Oct 5, 2019. One method of forming a lintel with soldiers and a cast insitu concrete inner lintel, was to fix wall ties into the joints of the soldiers and then cast the inner lintel. Hi all, I have two non load bearing concrete blockwork walls. pdf (stressline. Galvanised, mild steel. Jord86 Screwfix Select. Bob Rathbone, May 7, 2023. are you a taffy by any chance, dim dips**t. Mr. 2. 5 inches). Thanks We want to extend this opening from 46" to 55",I know I need a 1800 x 100 concrete lintel but not sure of what height I need,the 1 fitted is 65 mm many thanks. Above the lintel is stone to the apex. #1. Notnowvicar, Feb 23, 2023. S Builders New Member. For guidance catnic do give all lintel sizes and spans for different beams on their website. 1,The lintel on the brickwork should realy have a bed under it but not essential. above. Thread by: senlim , Mar 16, 2023 , 1 replies, in forum: Builders' TalkA prestressing process gives the concrete lintel a high strength to section ratio, minimizing costs and making for safer manual handling. Steve, just so you know the theory of the concrete lintel. You could use a self tapper if you're feeling especially technical but there really is no need, imo. In the dining room we currently have a upvc window that is just over 1500 wide and we want to remove it to fit in some patio doors also 1500 wide. Thread by: Slinksta , Jan 7, 2023 , 9 replies, in forum: Builders' Talk Thread A prestressing process gives the concrete lintel a high strength to section ratio, minimizing costs and making for safer manual handling. Architect has advised to use a box 200 lintel, but what are my options. It’s a cavity wall construction with block internal walls and brick external with timber rafters spanning the width of the building topped with concrete roof tiles. They have become a little wobbly since the. Have you fixed the leak above them, because if not, that's. Click & Collect. Allow to set, remove lower bricks to form opening. The. 4. The both garages of both houses are in the mid part. This will prevent the stones from falling away when they're disturbed. If you’ve got a brand new drill bit, you’ll find it quick and easy. Screwfix Community Forum. Without doing research into current regulations, based on my experience alone I’d suggest you will definitely need a 600mm lintel and with a cavity tray and weep vents above. The Stressline fair faced prestressed concrete lintel, 100mm wide x 215mm high, 2. It can do, depending on the age of the building. The lintel should have minimum 100mm bearing either side. You'll need to screw PB to the wooden lintels. Step 1: is the lintel man enough to carry the loads? Step 2: install following manufacturers instructions to prop during brickwork as span > 1500. The standard design figure for a flat roof is 1. You should be able to take that lintel out without any collapse, but it's your call, if you want to put in some props first. I think there are several ways the water could be gettig in: (a) there's a crack between the lower course of bricks and the upper side of the lintel, possibly made worse by cable holders penetrating the pointing (no I didn't put those in) and (b) there's a cracks in the. . Step 2 - install lintel and place props and strongboys wait 5 days for mortar to set. ElecCEng, Aug 27, 2020. Our builder has just installed an RSJ that is meant to support a load bearing wall and structural lintel. 2kN/sqm, So half of a 3. Home Forums > Screwfix Community Forum > Builders' Talk > Lintels. Use strong mortar (3:1) for bedding. Self tapping screws into the lintel to create a strong fixing as the blinds are very heavy. arrow Screwfix Select. A window company I've used before gave me a reasonable quote for the doors, but they've given me an estimate of £1,500 - £2k to put a lintel in. Architect has advised to use a box 200 lintel, but what are my options. The bricks are probably over-hanging the lintel edges so you can't see anything. Don't know if the window is set back 4in, easier to take out, or sitting under the arch. I have exposed the internal side of the concrete lintel above my lounge window as I was adding insulation behind the plasterboard. VAT) prestressed concrete lintel. #3. Rebuild brickwork above lintel and allow to set. D. Product Length. Click and Collect is available or enjoy free UK delivery on selected orders over £150 ex VAT. 9 KB Views: 48. I am building a concrete workshop which will have a doorway 1. Discussion in 'Builders' Talk' started by Lee Swain, Jan 10, 2022. 5 x 200 =32 kg. I suppose option 2 makes it easier to get the lintel. Drilling into a lintel seems like a bad idea, what with it holding up the wall and everything. Cut a few holes in the wall and slide in some needles and jack the needles across the upper edge of the opening - Next cut a timber the width and depth of the opening and jack it in place below the opening and whack out the rotten timber. Is a stressed concrete lintel suitable for this job (like a wide doorway)? Or should I put a steel section in there? Thanks. 4. 5kn. Aaron Mcculla New Member. This will be like trying to support a loadbearing wall on a folding steel rule. Then finish with mortar and leave the Acro's in overnight. When you use the key to unlock the door, if you leave the key in the lock and open the door the key hits on the lintel above and is prone to snap (as the carpenter found out). . Joe the Plumber Screwfix Select. The issue is long term Damp Proofness of the lintel (i. 64m2. From the outside the lintel looks entirely intact but obviously the inside could have rusted and failed and be pushing outwards. While I think this is the easiest. Ordinalrily the membrane/cavity box slopes from the inner leaf down to the outer leaf above the lintel. A new HSS bit should easily carve through a lintel without problem. The wall itswlf is an external end of house (detached) wall, bottom floor. 6 x 0. . Aaron Mcculla New Member. All you see is the steel lip and then the bricks. If it's under the arch, cut the frame don't lever it out whole. Would a 100 x 65 lintel be sufficient given that there is very little weight above or should I go bigger. I understand the loading to be 1. Severntrent Screwfix Select Load acting on lintel is basically the weight of a 45 degree triangular wedge of brickwork acting from above the opening, Assuming a 800mm opening and weight of 100mm thick brickwork being 200kg/m2 the load on lintel= 0. Get 10% off - View Offer. My inner walls had timber lintels. Bigger window and lintel replacement. The wall ia load bearing for the floor joists above and a wall which itself is not load bearing. Measuring the gap is totally pointless yet simple to estimate, the 20mm side has a 7mm gap whereas the 24mm side has an 11mm gap, based on it being 12. I have a small window approximately 450 wide to go in my kitchen wall, the wall is block 100mm cavity and then brickwork !trustmark, Oct 22, 2006. When lintels were cast insitu the steel was put in the bottom as this was in tension. Prestressed concrete lintels are an excellent solution in providing economical and robust masonry support over door. I merely pointed out that there is usually more than ONE correct terminology for the same thing. 2m) would mean that there would be some minimal loading on the pipe. I'm starting to notice some smalls cracks above a few lintels. #6. Some info: The lintel length will be 1200mm (150mm overhang on each side) but not sure what height and depth to buy. I figure the lintel does not offer bearing to the bricks above. Now have upvc windows. An surveyor will probably cost £100 for the call out, inspection and short report and advice on how to fix it. You will need a lintel and if this is the advice he gave you I would arrange and in independent person to check his work. I suspect it could do with replacing. 6m wide opening. stevie22 Screwfix Select. I would have said not to be concerned but the crack is also on the. stuart44 Screwfix Select. Acrow into place. arrow Screwfix Select. 3 - take out layer of bricks in the sides of stack and break into partition wall. the biggest rsj may support the weight above, but the rsj might wheigh 25tonnes in which case the footings will start to sink. It's a wall dividing two rooms & usually front & back, plus it's the mid way support for the 1st floor joists, & wall continues up & will divide two bedrooms, the wall then supports the bottom chord of the truss which the ceillings are fixed to. Fillers and Putty are used to fill or seal holes, cracks, or gaps prior to further decorating. Smart™ Galvanised Steel Angle | 150mm x 100mm x 12mm. Discussion in ' Builders' Talk ' started by AndyBowen, Mar 31, 2023 . The doorways have four runs of blockwork (not the aerated sort) above them in a bungalow. Most of the windows on the front of the home (though not all) have large gaps between the window and the steel lintel (up to 2. You select your lintel based on loading it needs to resist Based on your description you will need a lintel that can take Area of a 45 degree triangular load above lintel = width x half the height = 1. The part picture is the widest. Hausfix Screwfix Select. D. 1) Extend the chimney breast out a little from the left to allow the lintel and the fireplace to sit centrally (image 1) 2) Install a steel frame and anchor it to the back wall to support the overhung end of the lintel (image 2) and I don't want to build a frame out from the chimney breast and recess the fireplace into either as it would. additional dead weight = 145. The dimensions he specified are a little awkward (225 x 100 x 75mm), and we would like to avoid having to stick a 600mm long lintel up there if we can get away with it. Ask a question. replace lintel and then have the joints repointed to ensure integrity between bricks. Another possibility is a lintel has cracked but again this is major issue not a £350 invisible repair! Honestly I can not imagine any work that a) a window company would do 2) would cause no disruption 3) would only cost £350. This lintel was already in need of redecorating as there is significant evidence of past water ingress, however having lived in the house since 2016. Graham Swire New Member. I prefer Catnic as well, although I liked the old Catnic ones better. Read the table on you link your 65mm lintel over a 2. I would have expected to use accro props with strong bows min of 3 for the big one. I would like to replace the lintels as it got a crack. Tags: lintel; shed roof; Jugs69 New Member. This lintel will be re used for one window. Finally with 100 bricks and a 215 wide wall you only have 100 left for the lintel beam. Any ideas please? fred812, Jun 18, 2021. nutnut New Member. Build up the right hand wall to support the lintel then cut away the excess on the left. beam direct onto the brickwork. com. Rebar is just steel, so any metal drilling bit should be fine. These products are suitable for use on a variety of. Design will show that a 65mm p/s concrete lintel is ok - cost about £10. The photo shows the oven and fridge freezer that are going to be removed and the opening made behind, however before any walls start getting cut i have been trying to find out about the lintel and how far in the doorway (archway?) will need to be from the corner, i have attempted to search google, however only come back with "Corner lintels". Hi. Although I asked the builder, when building the shoulder for the new lintel to use the standard 'brick tie in method' (brick, half brick, brick, etc. 7kn/m run. back in 2016 I had windows and doors fitted. Why remove the roof? I'd wrap the whole lot with external insulation. Hi, I'm in a predicament with what lintel to put above a garage door, im currently building a 5. Galintel 75mm x 10mm x 1600mm Galvanised Flat Lintel Flat. Has anyone heard of. I am planning to purchase a semi detached property, which has got 2 concrete lintels inside the integral-garage which supports the wall above. I’m planning on using a strong boy prop to hold the downstairs load bearing wall in the centre while I fit a 1200mm concrete lintel. Supreme L03 Steel Reinforced Concrete Lintel - 100 x 65 x 1200mm. Discussion in 'Builders' Talk' started by goldeneye78, Jul 26, 2018. Bed it in nicely, and allow the mortar to set for. 8m (wall is 3m) and need to support the roof (7×2 joists 18mm osb) but dont have the room for a rsj because of the 2. 8kn. Remove loose paint and wire brush lintel, then dust down. If they're sensible. The builder has put a concrete brick in the coving of the RSJ but it is only under lapping the lintel by about an inch. VAT) prestressed concrete lintel. Sean_ork, Sep 20, 2013. However if the lines of influence spread out at 30 degrees there would be no loading on the pipe. Use either lintel or angle iron between brackets. Thermal block has cracked diagonally starting from the end of the lintel, both towards the window opening and away from it, and has crumbled away in places. Step 1: is the lintel man enough to carry the loads? Step 2: install following manufacturers instructions to prop during brickwork as span > 1500. For the sake of a bit of extra work and sorting that mess out just hire a couple of size 0 acrows, a couple of strongboys, stitch drill the mortar bed joint and bang them in above the higher lintel, remove all the cack underneath that's not needed and insert a new lintel once the brickwork is tidied up. £177. Looking for advice on which lintel will be best suited for above the doors :concrete,steel etc,All the lintel will be carrying is 3 course of concrete blocks and 3 course of thermal blocks, Thanks for any help AaronThe hole wont require a lintel, but will require a big drill! A 9 inch thick solid wall indicates that it could be a Victorian house. Screwfix: Thousands of products at trade prices | FREE delivery available 7 days a week | FREE click & collect in as little as a minute | Hundreds of storesLintel. etc. If i use a catnic lintel then you will be able to see the underside of the lintel rather than the stone head. The lintel is only supporting the inner skin of block work. 8m to 2. So it is one of their lightweight ranges. Good morning. And besides as said, they are liable to restore. 50 - £ 35 View options Catnic ANG Lintels - 1200mm Steel Angle Lintel £ 51 Add to. If you look at how the soldiers line up with the brickwork at the top of the frame, it doesn't look like there is. This will prevent the stones from falling away when they're disturbed. 1/ spread mortar along its top surface, use a spare akro to wind it up into place (not too hard tho) then backfill the 2 bearing surfaces on either end. Live in a 1980s semi-detached house and during winter months we get excessive condensation on the recess wall above the bedroom window. Having the lintel more or less touching the frame isn't a problem, it just shows they measured an manufactured the windows accurately as you don't want big gaps. If it was my own place I wouldn't mind as I would remember to take the key out before opening. Easy to use by filling hole with the mix and adding water, no manual mixing required. The 2 seperate lintels support the struts and are obviously bearing the weight of the roof. 6m lintel (assuming clear span of 3. neilbick New Member. Hausfix, Sep 15, 2022. I wasn't provided with building regs or drawings and used my 25 years experience during job. 65x1. I want to have this 4' hatch in a load bearing wall where the lintel is some 3' down from the ceiling. Click and Collect is available or enjoy free UK delivery on selected orders over £150 ex VAT. So ref your other post about the steel, it has to carry. hallbeck New Member. FREE next day delivery available, free collection in 1 minute. This could be a RSJ steel lintel or concrete lintel. The both garages of both houses are in the mid part. It is quite normal to have the slight overhang, wider than 6mm if that's the way it works out. the reinforcement steel inside) that is holding the wall above it. The UK’s leading retailer of. 4 kN/m (26kN/m if the span is 1. Above one of my windows is a crack going along what i presume is a concrete lintel, is this dangerous and. Spot on. CGN Screwfix Select. I intend to replace the conservatory, but just find that the mortar above the lintel has cracks causing like 3-5mm horizontal gap. Height and width will be 200 X 100mm. 2m. I'm trying to drill some holes above a wide window in a 1960s/1970s ex-council house to fix some brackets (top fixing) for some blinds in the kitchen. 0m) cut to size obviously. The RSJ size is 5155mm supported on the side wall 250mm pillars. Current lintel fitted i think is 300mm x 90 mm concrete spanning both courses of brickwork. Screwfix Community Forum. I've uncovered the metal lintel (installed in 1990) and it looks pretty rusty. = 509. This may also help with the heights because if an engineer can prove it, you may be able to get away with a beam on the internal skin along with the bottom plate. If you hit the rebar in the lintel when drilling in to the concrete lintel, its integrity will be compromised. After the new lintels are in place. so a 140x100 is 140 high as concrete lintels only span a single leaf of bricks. To ensure the soldier course bricks are flush with rest of the house the bricks have been cut down. = 282. We thought about putting a timber batten above the window on the inside wall, but the plaster and paint for the whole room is really uneven, so we're just trying to get some. Cut a slot with an angle grinder with diamond blade. 4kg/m = 364kg. Support bracket for removal of internal chimney breast. Anyway it cost me £180 to have one installed and they used props to hold up brickwork. The plate is rotten as well, along with some of the joists which are also being replaced. Write a review. KBJ Active Member. Not impressive work by the builder. from $586 12 from. Step 1 - Stripping wallpaper to see plaster board identify existing lintel and remove render. Don’t worry, it’s not especially difficult to do, however. Ideal for installation of wood, metal and concrete posts. wardoss, Nov 29, 2006. I'd rake that out a bit then fill with toupret masonry filler (powder and add water) masking tape around to keep tidy and protect window with hardboard or something. Support bracket for removal of internal chimney breast. The opening's been narrowed and shortened at some point in the past (I get the feeling this was done by a previous owner rather than a professional). Tamp it well down into the formwork to get rid of any voids. One opening will need to support three floor joists at midspan. two foot wide is mentioned - so 2 props either side of the opening, needles through, with 2 more on the other side of the wall taking the other end of the support member/needle - somewhat simillar to the below. the wooden window is looking like it needs some attention too. The mortar isn't holding the brickwork and lintel in place and cracks/parting of the two are gradually getting worse. But if the underside of your foundations are 1. I think the boot lintels could be twisting causing the issue? I know the cracks are not very big, but if there is an issue I would like to get it sorted before it gets worse. £75. Use either lintel or angle iron between brackets. 42 per M. 60 metre garage out of 6 inch solids, the span of the door is 4. ChrisLong Member. When doing decorating your can see the solider bricks directly above the window frame hence why I'm assuming there is no external. If you’ve got a brand new drill bit, you’ll find it quick and easy. During the old render hack off, I noticed that the single coarse of bricks above the window are in fact sat on the window frame it self. rogerk101, Feb 16, 2022. To solve this we fitted a 'Catnic' lintel to support the outer leaf only. looks like a flat steel plate, so my questions are this has been installed for years and years as we are looking at installing a log burner. This is why is quite important to drill a pilot hole 1mm less than the screw to get a good fixing. Upstirs windows were fine as the lintel in the. #3. I the house is 1950s all brickwork and I need to replace the lintels above the doors as there will not be a big enough overhang each side. Depends on the size of the opening.