Building a tile hearth for a pellet stove

[steve58]

I'm gonna put it on top of a finished oak hardwood floor and dont want to destroy the oak floor,,I'm setting 12" tiles on top of the Hardy backer board which is fairly rough on the bottom and was wondering what to use to protect the floor underneath,, Luan board or the red rosen paper,, or something else?
I also dont want to cause a moisture problem,,,

 

[slickgt1]

I don't know how you plan on doing this without securing the hardie to the floor. You need to glue and screw the hardie down.

 

[steve58]

I figured the weight of the stove 350lbs. + or - would hold it in place,, The hearth will sit in a corner and is 36x42.

 

[slickgt1]

In that case, build a frame. Plywood over that. Then hardie the whole thing. Tile it. Put felt pads on the bottom, and bring it in. I would not put paper under there.

 

[Garage Flooring]

Keep in mind that many of the building codes have new ratings for 'hearth protection" or more accurately floor protection. If you have a look in your manual it should make recommendations. In general a combustible which is covered by a non combustible is still considered to be a combustible surface.

This article is interesting but applies to wood. Check your manual and see what hearth protection is required (if any)

http://www.ehow.com/list_6746304_hearth-pad-requirements.html

Here is an example from a Lennox Bella Fireplace See page 4.

 

[slickgt1]

Technically it is clearances to combustibles. He should be fine as long as he follows his guide.

 

[RAYJAY]

In that case, build a frame. Plywood over that. Then hardie the whole thing. Tile it. Put felt pads on the bottom, and bring it in. I would not put paper under there.

X2 on this would do it the same way

you could look on http://nepacrossroads.com/ its for coal burning but there is some really good installs there

Jeff

also found this some coll installs here one guy used unistrut for the frame

http://www.hearth.com

 

[Garage Flooring]

Technically it is clearances to combustibles. He should be fine as long as he follows his guide.

Clearance to combustibles refers to the distances up and in every direction outward. Floor protection is another issue all together. There are two types of floor protection that could be required thermal rating required and thermal rating not required.

OFTEN but not always, when thermal rating is not required by the manufacturer you are simply looking for ember protection. When thermal protection is required it becomes more complicated. I have a chart that shows the values of various components, etc.

Clearance to combustibles is designed to guard against heat transfer where floor protection can be designed to protect against heat transfer but is typically designed for protection against direct contact with hot embers or coals.

 

[steve58]

Thanks for all the advice,, I think I'm going to attach the hardy board to 3/4" plywood,, as heat is not the issue its protection from the embers as mentioned.