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digger
Deteriorating cement board clapboards.

The clapboards near the stairs are disintegrating. I believe they are fiber cement board. The stairs are stone, and lead to the front door. I'm not sure what to do to prevent this from happening again. We thought about flashing, but am not sure how to do it, or if it would look right.
This house was recently purchased by a friend. I've done other repairs and interior painting, but am stuck on this one.

http://flic.kr/p/fioFLP

http://flic.kr/p/fioFKT

I've tried to embed the photos in the message but couldn't do it. Kept getting invalid image. Sorry about that.

ordjen
Re: Deteriorating cement board clapboards.

What is the nature of the deterioration? Cementboard, at least Hardi-Plank, is highly resistive to water damage. the lesser fiberboard products will turn revert to sawdust when wet.

MLB Construction
Re: Deteriorating cement board clapboards.

i can't open your pictures but from what you've described i highly doubt that you have fiber cement clapboards.

dj1
Re: Deteriorating cement board clapboards.

digger,
Try posting a photo on photobucket.com and then give us the link details.

digger
Re: Deteriorating cement board clapboards.

I'm not home right now, but i will check the extra clapboard that were stored under the deck. I think the previous owner let snow stay on the steps in that area.I thought constant wetness could cause this kind of damage.

MLB Construction
Re: Deteriorating cement board clapboards.

i'm not saying that it's not cement board but it doesn't look like it is in the picture you posted. you can put fiber cement clapboards in the deep end of a swimming pool for a year, let them dry out for a day then install them and they'll be fine. it looks like the paint is failing where the claps meet the steps.

Clarence
Re: Deteriorating cement board clapboards.

If you are in an area that has snow and ice and salt or a deicing fluid was used it would cause the cement board to break down.

MLB Construction
Re: Deteriorating cement board clapboards.
Clarence wrote:

If you are in an area that has snow and ice and salt or a deicing fluid was used it would cause the cement board to break down.

good point, didn't think of that....and that's true

HoustonRemodeler
Re: Deteriorating cement board clapboards.

flashing will involve some air room for the space to dry. If snow salt is a factor, lead flashing is in order.

Sombreuil_mongrel
Re: Deteriorating cement board clapboards.

Hardi recommends not placing their products in the splash zone, but having 2" vertical space above any horizontal surface. You run flashing down to the steps instead of cement board.
Casey

digger
Re: Deteriorating cement board clapboards.
Sombreuil_mongrel wrote:

Hardi recommends not placing their products in the splash zone, but having 2" vertical space above any horizontal surface. You run flashing down to the steps instead of cement board.
Casey

Can you point me to some pictures or a video of this process. I've never installed flashing on stairs before. I am picturing flashing on the granite steps, can't see how that would look nice.
I have another image of the whole area.


photo by diggerd, on Flickr

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