Replacing original 1923 two-pipe steam boiler

Boilerpro_3

I stand corrected NM

Boilerpro_3

Also, High density Blown Rockwool

is nice. Fireproof, high R, no sagging, and really restricts air leakage. For new homes it can be installed when the bays are open and it bonds to the surfaces. I imagine alot less holes are needed in existing structures for installation.

Boilerpro

Ron Schroeder

Stonehouse

I would think that with that many holes 1/4 inch sheetrock over the walls would have been easier??

The Wire Nut

We looked at that

but decided that the foam was better for our situation. As the foam expands it forces it's way into areas that would not be reached by blowing in rock wool.

It filled, for example, between the cracks between the laid stones. This was evident from foam coming right through to the outside which manifested it self, in some cases, as "beehives" of foam!

The down side to the expanding foam is that it sometimes was too much and popped some plaster away from it's lath. The foam kept it glued in place though.

As with any project that involves major expense, one must do their homework, ask questions and decide what is best for their situation. Sort of like the first post on this thread, keep the steam or replace it with hot water!

Alex

The Wire Nut

Not really...

For a number of reasons that wouldn't have made too much sense in our case. We wanted to keep the look of the old plaster walls as it was more in keeping with the houses style.

Sheetrock would also have been a whole other expense in money and time. It would have meant spending time cutting, mounting, taping (a simple art that I have never been able to master!) and finishing. Then cleaning up even more plaster dust.

The holes, on the whole (pun intended), weren't that bad in the end. For the most part the foam poked through like an "outie" bellybutton. It was a simple matter to poke it back a bit and slide some plaster over it. As most of the holes were in a straight line, it became a mechanical process after awhile. The worst part was sanding down my initial attempts which left way too much plaster on the surface. By the end, the patches required a small swipe with a damp sponge to get it even with the surface.

But, it was still a chore!

Alex

gerry gill

hey Pat

Anything not on the chart would be desirable to test..Dan has the latest chart as of a roughly a couple weeks back so i imagine thats whats in the current balancing booklet.

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gerry gill

Hi BP

I would imagine you would run across some neat stuff in illinois what with chicago's manufacturing past..anythings always welcome to test..so much of the steam stuff was localized that i've found most of the stuff that was local to cleveland..but theres lots more out there..

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gerry gill

we have a 512h in the chart but,

and its a big but, webster would put different orifices in the same bodys..for example, weve tested a 512h with a ''a'' seat and an ''s'' seat..both different size holes..this was sent to me awhile back fron John Shea of Detroit Steam Heat Co., One was a radiator trap, the other was a crossover trap..so with websters you never know what you have..would be interesting to see.

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GusHerb

Garret

Vapor system without traps on the end of the mains?

(edit: moved to a new thread)