How this sound for an inexpensive High R Hearth Pad ?

[elkimmeg]

I saw this hearth pad being built the other day and thought I would pass the info on..

The guy bought metal high hats (metal high hats and like 1.5” metal straps used on concrete walls to attach sheetrock I think Home Cheapo sells them.) He first laid down common fiberglass insulation but to leave an air space between the fiber glass and the metal high hats he cut a bunch of ¼” copper pipe he placed under the metal straps there allow spacing that the insulation is not completely crushed and reduce metal contact combustibles the copper pipes were laid on the side and cut just a bit longer than the width of the metal high hats. The insulation he used was HVAC duct wrap foil faced R-5.2. He centered the high hats 12” on center and place additional cross ones where the stove legs would be. His top was to be Durarock , faced with tile. He built it one inch larger for clearance distances and planned to use leftover mahogany 5/4 decking, that he would router a molded looking edge to ..

You can trim the edge with wood providing it is outside the clearance to combustibles distance. I liked this guy plan he achieved a high r value foil faced insulation has a reflective value and I passed the setup. He told me his total cost was less than $100 the tile being the most expensive item. What I liked best was his copper spaces creating separation distance and allowing an air space gap. The total thickness was less than 2.5”
R- value 5.2

 

[Homefire]

Copper is an excellent conductor of heat.

 

[jjbaer]

I saw this hearth pad being built the other day and thought I would pass the info on..

The guy bought metal high hats (metal high hats and like 1.5” metal straps used on concrete walls to attach sheetrock I think Home Cheapo sells them.) He first laid down common fiberglass insulation but to leave an air space between the fiber glass and the metal high hats he cut a bunch of ¼” copper pipe he placed under the metal straps there allow spacing that the insulation is not completely crushed and reduce metal contact combustibles the copper pipes were laid on the side and cut just a bit longer than the width of the metal high hats. The insulation he used was HVAC duct wrap foil faced R-5.2. He centered the high hats 12” on center and place additional cross ones where the stove legs would be. His top was to be Durarock , faced with tile. He built it one inch larger for clearance distances and planned to use leftover mahogany 5/4 decking, that he would router a molded looking edge to ..

You can trim the edge with wood providing it is outside the clearance to combustibles distance. I liked this guy plan he achieved a high r value foil faced insulation has a reflective value and I passed the setup. He told me his total cost was less than $100 the tile being the most expensive item. What I liked best was his copper spaces creating separation distance and allowing an air space gap. The total thickness was less than 2.5”
R- value 5.2

Yes, copper is a great conductor but here's what happens....the top layer of tile is, for all intents and purposes, not there due to having a virtually non-existant R-value....so the heat propogates immediately downward to the metal studs....metal is a good conductor but there are two unknowns: 1) how much heat is delivered to the studs and how evenly does it distribute it and 2) although the contact area with the copper is minimal, how much heat is conducted downwards through the copper......

 

[Homefire]

So why would anyone with any type of safety knowledge take that chance
to transfere all that heat to the copper and on to the floor.....Seems really risky to me.

 

[Homefire]

How does it sound?
DANGEROUS

 

[par38lamp]

Can you please explain the "high hats"? Are the high hats and 1.5" strips one in the same? AKA Hat channel? Used like you described, to allow you to hang drywall on concrete walls.

Did he secure the copper pipe to the high hats?

I like the idea, just jot sure of the strength of the high hats.

 

[elkimmeg]

under the copper spacerd is the fiol faced crushed sown fiberglass. fiberglas isn non combustiable or has a much higher flash point than wood I considered it quite safe also the arera still had the reflective facing point up. I might be wrong Maybe I should not have passed it. Sometimes code interpetation id not found in written word and you have to make a decision in the field
.

Homefire might be correct I should not have passed it. I do know there is some R-value in the durarock before heat penatrates it to the metal high hats underneath.
I do know that 1/2 durarock and tile does increase the separation distance I do know the full bore of heat has to penetrate the tile wonder board tramsmitt to the metal to the copper spacers
past the reflective barrier then threw the crushed dodn fibberglass Insulation before it can combust the wood underneath. I felt confident enough to pass it.
What there is miniumal exposure to the copper.

Since copper is the issue what he had used 3/8" ceramic tile for the spacers? I mean I'll call him and make that recomdation If I can get to him before he tiles it.

 

[jjbaer]

So why would anyone with any type of safety knowledge take that chance
to transfere all that heat to the copper and on to the floor.....Seems really risky to me.

If I understand it correctly, I think the contact area between the copper and metal studs is very small...sounds almost like the copper is sliced into "rings" of an inch or so, thus making the contact area between the copper and the rails very small...or the copper pipe is laid on the floor, thus making the contact point a "line"...either way, there are three methods of heat dissipation before it reaches the copper: 1) the first layer of metal studs dissipates heat along its length, 2) limited contact with the second set of cross studs reduces heat flow and the second set of studs also dissipates heat along its length and 3) as long as the points where the two metal studs meet also doesn't align with the point of contact of the copper, then you're only heating the copper at a small contact point (thus small heat transfer) and, you also have the two metal stud rails above it which distribute the heat first before it even reaches the copper......just my guess.

 

[elkimmeg]

So why would anyone with any type of safety knowledge take that chanc

to transfere all that heat to the copper and on to the floor.....Seems really risky to me.

For all that do not follow homefire post, most are directed as digs towards me, I do not know what I did to him ,but he makes every effort to discredit me and get his digs in

I have sat back patiently and gone along for over a year now. and not said a thing. I'm not saying My spelling needs correcting but guess who is the first to point it out.

He has made many many digs at me and I never said a word or got into a pissing war with him If he had a problem I could help solve I would try to help out the same for any other member here. Somehow he feels I did some wrong to him why don't you be a real man about it and tell me how what I did wrong. so aI can apploigise and move on.

This little nit picking and snide remarks, is like running behind peoples backs and not being man enough to face up and address your concerns.

Can you get it out so we can move on?

 

[Gunner]

hh:

 

[ozarkjeep]

Welcome to another episode of " How the Hearth Turns"

 

[Homefire]

So why would anyone with any type of safety knowledge take that chanc

to transfere all that heat to the copper and on to the floor.....Seems really risky to me.

For all that do not follow homefire post, most are directed as digs towards me, I do not know what I did to him ,but he makes every effort to discredit me and get his digs in

I have sat back patiently and gone along for over a year now. and not said a thing. I'm not saying My spelling needs correcting but guess who is the first to point it out.

He has made many many digs at me and I never said a word or got into a pissing war with him If he had a problem I could help solve I would try to help out the same for any other member here. Somehow he feels I did some wrong to him why don't you be a real man about it and tell me how what I did wrong. so aI can apploigise and move on.

This little nit picking and snide remarks, is like running behind peoples backs and not being man enough to face up and address your concerns.

Can you get it out so we can move on?

Stop giving advise that could cause harm.

 

[elkimmeg]

a lillte history of his less than kind post towards me

How about a spell check or is that in your land fill with all your old stoves?


Thousands and thousands of hits form 3 or 4 poster?
(edit)
can anyone say OCD run amuck’s

If your to lazy to carry wood then get NG, OIL, PROPANE, ELECTRIC or whatever else the old and infirmed are froced to do.
Dumb WaiterS and backhoes for wood. LMAO and ROTF wink

The 49 other states and DC are not bound by Mass. or it’s inspectors. Common sense is the building code in effect in most of the USA.

Elk’s not here man.
He has taken the South Park approach to to life acting just like little Eric Cartman when he failed to get the boys to respect his authority.
He said screw you guys; I’m going home.
In Elk’s case it’s gone fishing.

Gee Elk did you ever think just maybe the codes might vary from place to place?

 

[jjbaer]

So why would anyone with any type of safety knowledge take that chanc

to transfere all that heat to the copper and on to the floor.....Seems really risky to me.

For all that do not follow homefire post, most are directed as digs towards me, I do not know what I did to him ,but he makes every effort to discredit me and get his digs in

I have sat back patiently and gone along for over a year now. and not said a thing. I'm not saying My spelling needs correcting but guess who is the first to point it out.

He has made many many digs at me and I never said a word or got into a pissing war with him If he had a problem I could help solve I would try to help out the same for any other member here. Somehow he feels I did some wrong to him why don't you be a real man about it and tell me how what I did wrong. so aI can apploigise and move on.

This little nit picking and snide remarks, is like running behind peoples backs and not being man enough to face up and address your concerns.

Can you get it out so we can move on?

Stop giving advise that could cause harm.

I don't think you're looking at what he's suggesting........there are several layers of equivalent R-value here: 1) Durock, 2) then 1st of two layers of metal high hats that if they become hot, will distribute heat over their lengths, 3) the 2nd of two layers of high hats which (if I read this correctly) only touches the first layer at small areas where they overlap at 90 degrees and with this small area, the heat transfer is lower and if they do become hot they will, as the 1st layer did, distribute heat along their lengths, and 3) then (if I understand this correctly) the copper pieces also only overlap in very small areas (either "lines" or "circular sections" of pipe) and heat transfer to them may be minimal because of 1 and 2 above...... A picture would be nice though.

 

[Homefire]

a lillte history of his less than kind post towards me

How about a spell check or is that in your land fill with all your old stoves?


Thousands and thousands of hits form 3 or 4 poster?
(edit)
can anyone say OCD run amuck’s

If your to lazy to carry wood then get NG, OIL, PROPANE, ELECTRIC or whatever else the old and infirmed are froced to do.
Dumb WaiterS and backhoes for wood. LMAO and ROTF wink

The 49 other states and DC are not bound by Mass. or it’s inspectors. Common sense is the building code in effect in most of the USA.

Elk’s not here man.
He has taken the South Park approach to to life acting just like little Eric Cartman when he failed to get the boys to respect his authority.
He said screw you guys; I’m going home.
In Elk’s case it’s gone fishing.

Gee Elk did you ever think just maybe the codes might vary from place to place?

LMAO&ROTF
ELK;
you left out the frenchcries and Waaaburgers from the colts spanking.

 

[jjbaer]

a lillte history of his less than kind post towards me

How about a spell check or is that in your land fill with all your old stoves?


Thousands and thousands of hits form 3 or 4 poster?
(edit)
can anyone say OCD run amuck’s

If your to lazy to carry wood then get NG, OIL, PROPANE, ELECTRIC or whatever else the old and infirmed are froced to do.
Dumb WaiterS and backhoes for wood. LMAO and ROTF wink

The 49 other states and DC are not bound by Mass. or it’s inspectors. Common sense is the building code in effect in most of the USA.

Elk’s not here man.
He has taken the South Park approach to to life acting just like little Eric Cartman when he failed to get the boys to respect his authority.
He said screw you guys; I’m going home.
In Elk’s case it’s gone fishing.\

Gee Elk did you ever think just maybe the codes might vary from place to place?

LMAO&ROTF
ELK;
you left out the frenchcries and Waaaburgers from the colts spanking.

Homefire,

Psychologists would say you're jealous and you're expressing it in the form of tearing someone else down so that you can feel like a bigger/better man........it also manifests itself as impotence..... :coolsmile:

 

[Hogwildz]

Ah here we go again, yet another Internet Warrior. I smell a time out coming in the near future.
Spoon Jr. has arrived.




~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 

[jjbaer]

Ah here we go again, yet another Internet Warrior. I smell a time out coming in the near future.
Spoon Jr. has arrived.

Hi Hogwildz,

For whom?