1) I will install cement boards on 3 walls above the bathtub. At the corners, how big should the corner gap between Cement board on the walls? 2) Should the cement board be overlap the lip of the bathtub? or should be 1/4" above the top edge of the bathtub lip? Thank you.May 26, 2007 · cheap is not always best, esp with decorating as in the long run you will have to pay more to put it right, and in the mean time it will look **. i am guessing for even 300 quid their can't be many boards or soffits, 2.5 days max for a decent painter. that's a good price and you know that he is using weathershield and that uded in the price, …Jan 29, 2020 · Product Description. Recessed Concrete Gravel Boards are used to keep the panels off the ground, which helps them avoid rotting. These gravel boards are reinforced with steel for extra strength. Note that the 12in gravel boards are 46kg each and awkward to carry if you are not used to them. What is the cheapest way to build a retaining wall? *.Apr 27, 2011 · Discussion Starter · #6 · Feb 24, 2008. terri_and_jj said: get one of those powder actuated tools ( Hilti, Ramset, Remington, etc.) and some short washered pins. These tools are readily available and pretty handy. the guns range in price from $20 - $800 but the pins and loads are pretty cheap. just make sure to take care and follow directions.