I plan to lay Herringbone LVT in my hallway and into a porch area. The porch was built about 5 years ago and the slab has never really been level with the existing floor which is tongue and groove. So I plan to level the slab with self levelling compound but what would be suitable to level the t&g floor in existing house? Was thinking of ply then self levelling on top? Any advice appreciated.
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Advice on laying LVT
- Thread starter nabby68
- Start date
You need to level the tongue and groove with 6mm SP101 flooring grade ply, then level the porch to the ply with screed, then screed over the whole area with a suitable self leveling screed, we use Mapei Renovation.
Make sure you use the right self levelling screed, most are not suitable over ply.
Make sure you use the right self levelling screed, most are not suitable over ply.
You can build the height up with self leveller and bulk it with granite chippings, or, use a cement/mortar.
Important thing is this needs to be dry before you final coat screed to level. And when I mean 'dry' it needs to be tested/checked that its 74% RH or below before laying the LVT.
Building with self leveller/granite would dry quicker, just check the website for the product that it's suitable for 60mm fill (may need to be done in two applications)
Important thing is this needs to be dry before you final coat screed to level. And when I mean 'dry' it needs to be tested/checked that its 74% RH or below before laying the LVT.
Building with self leveller/granite would dry quicker, just check the website for the product that it's suitable for 60mm fill (may need to be done in two applications)
Check the specs of the SL, not all are suitable to go 60mm
Could I not do it in two layers if the SL only goes to 30 or 40mm
Unfortunately you’ll risk the SL not having the structural rigidity at that depth. Usually you can bulk with chippings with alot of products ok and that will bind the mix together.
Too much movement, too many different floor surfaces and it’s never advisable to screed over chipboard.
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