Basement Shower bench waterproofing

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Old 04-11-18, 08:58 AM
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Basement Shower bench waterproofing

Hi Everyone,

This will be my first time installing tiles and shower bench in our basement bathroom and I'm not sure if I'm doing it right. Anyways, I have a shower bench framed that was covered with shower liner then I installed a Hardie Backerboard on top of the liner around it. I did use an Adhesive caulk between the joints and cement board screws to attach the boards to the frame. I then installed a Fabric mesh on all the joints with Redgard then finally Redgard the whole bench with two coats.

My question is since the bench has no slop yet, should I apply another layer of cement, pitch it then Regard the cement again then the thinset, tiles and sealed the grout OR I can apply straight on the cement board with Redgard the thinset, tiles and then seal the grout? Would appreciate any information.
 
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Old 04-11-18, 06:49 PM
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I would give everything a third coat and possibly a 4th coat of redgard in the bench area. Slope your tile as you install then with mortar, use a level that allows you to gauge a 1/4" slope per foot. Same with the curb of your shower, 1/4" slope per foot back toward the shower.
 
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Old 04-12-18, 07:18 AM
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The best material to use for benches and nichs is foam. You can buy pre shaped pieces and you just mortar them to the floor and wall on top of the waterproofed wall/floor and since there is nothing organic it will never rot.

BTW, although Redguard has been around awhile it's not so great at sealing a shower especially a few years from now when the structure shrinks/expands and cracks form.

A foolproof system is Ditra/Prova membrane, will last forever!
 
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Old 04-12-18, 09:17 AM
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Thank you guys! really appreciate you inputs. I will just apply extra layer of Redgard on the bench and walls then apply the mortar, tiles and seal the grout with a grout sealer. thank you everyone.
 
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