From: [email protected] [mailto:[email protected]] On Behalf Of
Bob Werre
Sent: Monday, March 19, 2012 9:51 AM
To: [email protected]
Subject: Re: {S-Scale List} Re: Homosote Board
David,
I've got about 500' of Homasote roadbed cut from 4x8 sheets on my layout.
Depending on how much you need, I'd suggest cutting it into straight pieces
and cutting slots for the radii(if you need a lot there is less waste).
The spacing of the slots/kerfs is only important if you're going to have
sharp radii less than 32". For most applications I'd recommend slotting the
Homasote around every inch to inch & half. Yes! Do it outside and keep your
house windows closed ( if you have a poopy neighbor, there isn't reason to
advise him of the impending poopyness).
After you get the roadbed secured to the sub-roadbed it is EXTREMELY
important to seal it! Homasote is very susceptible to moisture so even
though I live in a very dry area (Denver), I've sealed mine with any cheap
latex paint I could lay my hands on. Don't worry about the bottom as the
glue between the Homasote and the sub roadbed will seal it. I have had no
problems with expansion/contraction or rail creep for over 20 years.
As for covering up the curvature slots/kerfs, I use "SculptaMold" prior to
sealing with paint. The stuff is powdered, almost a paper-Mache' like stuff
that mixes with water and is easy to sand once plopped onto the road bed.
It can also smooth out any surprise dips in the roadbed.
Homasote is great for roadbed: It's quiet, holds spikes and is easy to work
with, but the stuff will absorb moisture like a sponge unless it's sealed.
Good Luck!
Lee Kleidon
Track Tools LLc
Westminster, CO
