Polurethane for space heater base?

  • Advertise with us

« back to Finishing forum

Forum topic by Badgerstate posted 01-25-2021 01:13 AM 168 views 0 times favorited 3 replies Add to Favorites Watch
View Badgerstate's profile


14 posts in 39 days

01-25-2021 01:13 AM

So, I recently made a space heater base for my wife’s home office out of plywood and 2×6s. I gave it a nice, dark walnut stain and finished it with some water-based poly.
Considering that the base itself is made out of wood and is flamable, should I be concerned with flamability of the poli finish? Im finding conflicting information about oil vs water based. My concern is really much more with the base catching on fire due to the heat of the space heater than I am about the heat damaging the finish.
We’re talking a small, Black & Decker space heater that is under the desk of a home office.

3 replies so far

View Lazyman's profile


6628 posts in 2394 days

#1 posted 01-25-2021 01:54 AM

I don’t think that it will increase the fire danger much, if any, but I am certainly no expert. Even if polyurethane has a lower ignition temperature than wood, I think that if it gets hot enough to burn the finish, you have an unsafe situation, regardless. If any surface around a heater approaches 200° F, it is too hot, IMO. I remember reading once that polyurethane will start to soften or melt around 450° and will burn when flame is applied to it but will self extinguish when flame is removed.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

View Madmark2's profile


2277 posts in 1595 days

#2 posted 01-25-2021 01:59 AM

Put a large floor tile between the top and base of the heater. A nice piece of marble works too.

-- The hump with the stump and the pump!

View woodbutcherbynight's profile


7703 posts in 3416 days

#3 posted 01-25-2021 02:36 AM

Put a large floor tile between the top and base of the heater. A nice piece of marble works too.

- Madmark2

+1 and you can be creative with style and such, possibilities are endless.

-- Live to tell the stories, they sound better that way.

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics