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Discuss Pva Versus Primers | Always Use A Primer When Tiling, And Not Pva in the UK Tiling Forum area at TilersForums.com.
Thanks for the tips....great forum
Interesting thread. Questions about priming- In the UK do you prime every surface before you tile or only wood and plaster surfaces?
Over here the only time I prime a surface is before applying self leveling cement. Also if tiling over gypsum based self leveling (we call it gypcrete) installed by others.
Otherwise just use a latex modified mortar that is designed to bond to the particular substrate. We have ANSI 118.4 products that are latex modified for bonding to masonry surfaces and ANSI 118.11 for bonding to wood surfaces. They are adding ISO labels, Mapei has them already.
Most of the time I am setting over existing concrete. If it is a plywood floor we go with cement board/hardi/or Ditra over it.
For walls in showers I go with cement board but apply a surface applied liquid waterproof membrane. Usually the only time I am bonding to drywall(plasterboard) is for a kitchen backsplash.
Is the sealer to improve the bond, or to prevent the substrate from pulling the moisture out of the mortar too fast, or a combination of the two? Thanks.
the adhesive info is wrong. you should a primer suitable for the substrate but certainly not pva.What if it says on the adhesive pack to use 1:4 PVA:water solution to prime a wall before tiling?
Sorry for maybe stupid question but I am DIYer not pro.
Thank you so much for this post. I must admit over the years I have only ever used PVA to prime the walls before tiling as that's what I was told to use. I dread to think of all the bathrooms ive tiled what now has tiles hanging on literally to a sheet of PVA glue. I've just ordered some 'proper' priming liquid now and will never ever touch that stuff again. This website has opened my eyes in alot of ways and I cant thank you guys enough.
Thank you so much for this post. I must admit over the years I have only ever used PVA to prime the walls before tiling as that's what I was told to use. I dread to think of all the bathrooms ive tiled what now has tiles hanging on literally to a sheet of PVA glue. I've just ordered some 'proper' priming liquid now and will never ever touch that stuff again. This website has opened my eyes in alot of ways and I cant thank you guys enough.
Reply to Pva Versus Primers | Always Use A Primer When Tiling, And Not Pva in the UK Tiling Forum area at TilersForums.com
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