Homasote on plywood

I used one inch drywall screws on mine.  Holds good.  You cold use double sticky carpet tape too.  A little more expensive but will do the job.

I have always used "Liquid Nails", which comes in a caulking tube. I put "dabs" of the glue randomly all over the plywood, then set the Homasote on top of it. Next, I use a few 1" sheetrock screws along the edges and down the center to hold it down flat for drying. Sometimes I leave the screws in, other times I back them out when the glue is dry. That is up to you.

 It is not necessary to coat/cover the whole board with Liquid Nails. Just widely spaced gobs here and there.

Jeff

I just use just enough JHomasote to make the actual road bed -- glued down with Carpenter's Glue and then screwed down with 1 1/4" screws (just have that size around) and then back out the screws later before putting the ties & track down.  They are not needed any more and if you leave them in you are guaranteed of finding one later in just the wrong place...

I use drywall screws only. That way if something needs to come up one can do it. The only problem is the screws can leave a slight dimple. The screws really hold tight. Oh, the process is very quick.

We used yellow glue, screwed it down, let glue cure over night and then removed all the screws. 

We use the moisture-resistant Homasote 440, glue it to the sub-roadbed plywood with Titebond II, clamp it down under strips of wood, let it sit overnight.  Much quieter than screwing it down.  Use small screws on the Gargraves long enough to bite into the Homasote but short enough to not touch the wood.  Works great for us.

Any good industrial adhesive. You need to keep high compression during curing. This is best done by drilling 4 - 12 holes for bolts that be torqued with large washers on each side. When cured remove them. The screws will never provide optimal compression.

Everyone has an opinion, I use

          and then it has excellent results.

I have always used yellow wood glue and place weights on top of the homasote over night.  I also paint the bottom, top and edges of each sheet to help seal the homasote.

We used Titebond yellow glue and 1 1/2 inch sheet rock screws and/or deck screws. We just left them in. They all got covered with scenery and ground cover anyway. In some places we covered all the plywood. In other places we cut the homasote somewhat wider than the roadbed would be. It is not very hard to do and works well. 

Drywall screws only.

The real question is, where do you actually find Homasote these days?

Tinplate Tom posted:

The real question is, where do you actually find Homasote these days?

If you have a Menards they have it on the shelf by us or I spos you can order it to eh

Thanks Chad, but Menards does not have any stores in Texas

A lumberyard should be able to special order it.

Homasote has a website where you can search by zip code for places that carry it or can special order it.

Yes they do,,,just click on this link.

I never used Homasote before, but see from the link that Chris provided that many Home Depots carry it. However, is there a recommended thickness for O Gauge layouts? Thanks.

Tom 

MNCW posted:

I never used Homasote before, but see from the link that Chris provided that many Home Depots carry it. However, is there a recommended thickness for O Gauge layouts? Thanks.

Tom 

My last layout I used Homasote 440 1/2" but I'll be using 5/8" on my next one hoping the extra 1/8" will provide a little bit better sound deadening.  My local yard can special order 3/4" but I'll pass on that.  BTW the 3/4" is 4' X 10'.  I didn't even ask the price.

Tite-Bond moisture-resistant glue spread on the plywood, put Homosote on top, lay a 2x4 on top of the Homasote and clamp it with any clamps.  Let it set a couple of hours and it's done!

I buy 4x8 sheets of Homosote 440, which is moisture-resistant, at our local Mr. Plywood.  Home Depot also carries it but their stock is pretty crappy, all picked over.  Costs about $45 a sheet.

MNCW posted:

I never used Homasote before, but see from the link that Chris provided that many Home Depots carry it. However, is there a recommended thickness for O Gauge layouts? Thanks.

Tom 

We use 1/2" Homasote 440  on 5/8" plywood.

wild mary posted:

MNCW posted:

I never used Homasote before, but see from the link that Chris provided that many Home Depots carry it. However, is there a recommended thickness for O Gauge layouts? Thanks.

Tom 

My last layout I used Homasote 440 1/2" but I'll be using 5/8" on my next one hoping the extra 1/8" will provide a little bit better sound deadening.  My local yard can special order 3/4" but I'll pass on that.  BTW the 3/4" is 4' X 10'.  I didn't even ask the price.

Using screws short enough to bite into the Homasote without reaching the plywood underneath makes a quiet ride.

I purchased homesote at Builder's General in Nov. 2016 for $24 a sheet (4'X8' - 1/2" thickness)  -  I thought that was a great deal - plus they delivered it for no cost!!  I don't know if BG is in your neck of the woods but it's worth a try.

Kerrigan - why would you use screws "short enough to bite into the homesote without reaching the plywood"??  I use drywall screws about 3/4" to anchor the homesote to the plywood.  

I think Kerrigan means when you attach your track to the homeasote to use shorter screws so the train noise is not transferred to the plywood.  I also used homeasote over plywood and then built track bed out of 1/4" thick cork for a fairly quiet ride.

Kerrigan - my misunderstanding - senior moment!

Our menards sells homosote for around 25 - 27.00 a sheet eh