Tiling over Marine Plywood

The price seems excessive to me (although there may be reasons that are not immediately apparent from your description of the work). My advice would be NOT to proceed until you have had some other quotes, use my builder to advertise the job, you can view the profile of potential tradesmen and select those with good feedback to provide the quotes. Hope this helps

£1500 to do that? the job is not worth that I think he's taking the p**s. Please get some other quotes.

Thats to much ask what his material costs are and what his labour costs are, £500 for material is plenty so he must be charging £1000 to do that small floor, get another price.

Very sorry to hear about your husband. Hopefully what i'll tell you will help in the matter of the marine ply. The marine ply should be usable if it hasnt got water damage and warped. When re-tiling the ply it will need a coat of watered down PVA glue to seal it. This will prevent the ply from sucking moisture out of the tile adhensive, thus the tiles wont come unstuck. this should bring the cost of the job down. Also get another quote and compare the price and what they recommend to do. Hope this has helped you.

Get more quotes very expensive even if you replaced the marine ply with new 18mm @ £18 per 8x4 sheet, tiling i would quote including adhesives and grout £20 per sq metre so you work out that cost and add a bit on for rip out and you'll get a better idea of cost graham collum property services