Alternative To Drywall For Skylight Tunnel?

bob_cntrctr

Gentlemen,

I'm going to be installing a skylight in a bathroom this week. Insulate it as much as you can, these things always have condensation up around the skylight. (Cold climate area) So I was thinking about an alternative to greenboard for drywalling the tunnel. Something impervious. Like concrete board, but not concrete board because of the weight. Like Hardibacker, but not Hardibacker because of the pattern on the face.

Anyone used something that worked well?

Thanks.

rbsremodeling

If you want to use hardibacker what is the Problem. Skim it out like drywall and paint it

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bob_cntrctr

Highly do-able. But I should have added - I'm a lazy good fer nothin'..... Something I don't have to plaster would be nice.

CrpntrFrk

Prime the hardi....caulk it..... paint it..... done!

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DO IT!! DO IT!! DO IT!!

rbsremodeling

Edai plywood. It has a smooth surface and is moisture resistant. Home depot and Lowe's sell it.

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fastg60

what about the acrylic or fiberglass sheets that are used in the el-cheapo tub wall kits? glue them up, caulk the corners and call it done...

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Around The House

Remodeling and painting.

bob_cntrctr

What - smooth side out? Never tried to paint it before - it doesn't look like shiiite?

rbsremodeling

Nope good paint and it will look like drywall/plaster when painted. A little skimming helps if you use cheap paint or you can't paint

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genecarp

azek------4x8 sheets------

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CrpntrFrk

How high are the ceilings? The hardi has a bit of texture to it but a couple coats of paint should smooth it out enough to where you could not see it from the floor.

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DO IT!! DO IT!! DO IT!!

bob_cntrctr

Then - "ding ding ding ding" - we have a winner! We'll find out if I can paint.

Thanks guys.

bob_cntrctr

Nine foot ceiling; 5/12 roof; top of the tunnel will be ~13 ft high. West facing opening so soft evening light, and broadly tapered tunnel, so glancing sunlight on the surface - hopefully everything in my favour to make up for my painting ability.

georgmatthias

I don't know if you get this in the U.S. here in Germany you could buy a silicia-based board from the LEX Lindner Group. Easy to go almost like gypsum boards, but it's water proof.

Best regards Matthias Georg

Rockhound

ya beat me to it! azek and caulk

kgphoto

Georgia-Pacific DensShield Tile Backer, or DensGold. Both skim well.