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Fascia Hardboard Seams

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  • Member since
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  • From: Chi-Town
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Posted by zstripe on Wednesday, February 21, 2018 7:42 PM

I have 1/4'' wood paneling in My finished garage and use Vinyl Wall panel connectors. Looks a lot better than any other thing that has been mentioned aside from Dave H, this I believe is what He meant: Comes in different colors or paint Your color.

https://www.lowes.com/pd/Sequentia-1-42-in-x-10-ft-Prefinished-Vinyl-Connector-Wall-Panel-Moulding/4768249?cm_mmc=SCE_PLA_ONLY-_-Millwork-_-SosInteriorWallPanels-_-4768249:Sequentia&CAWELAID=&kpid=4768249&CAGPSPN=pla&k_clickID=d58f5074-ad21-42e6-9877-2dd976ec6451&gclid=Cj0KCQiAzrTUBRCnARIsAL0mqcwTCnrJsYWsZ1pDSIeLzWSij-UPhDfGdkCKP4Bx-9oN2YbhKViyfhEaAgmoEALw_wcB

Take Care! Big Smile

Frank

 

 

 

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Posted by bearman on Thursday, February 22, 2018 7:26 AM

I suspect that I am going to try spackle.  Mostly because I want the fascia to be removable and respackling is not as much of a pain as some of the other suggestions, which, I might add, were all good.

Bear "It's all about having fun."

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Posted by Doughless on Thursday, February 22, 2018 8:06 AM

rrinker

Per this spec sheet:

http://www.justtimberandpanels.info/Brochures%20in%20pdf/Masonite%20Standard_PDS.pdf

 

The humity expansion is 0.25% from 50 to 90% relative humidity. So an 8 foot long piece will expand by .24" if the humity goes from 50 to 90%. Not a whole lot.

 

                                      --Randy

 

 

It probably makes a difference how many attach points are used.  I went with untreated masonite attached every 16 inches to 1 x pine and got waves in between attachment points during the summers.  Maybe if I screwed it down more frequently that would've probably helped it from buckling away.

- Douglas

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Posted by railandsail on Saturday, February 24, 2018 7:47 AM

rrinker

Per this spec sheet:

http://www.justtimberandpanels.info/Brochures%20in%20pdf/Masonite%20Standard_PDS.pdf

 

The humity expansion is 0.25% from 50 to 90% relative humidity. So an 8 foot long piece will expand by .24" if the humity goes from 50 to 90%. Not a whole lot.

--Randy

 


Wow, Randy I wish you hadn't posted that one....ha...ha

1/4" may not seem like much, but the humidity change is just about what we get in FL, and I have very carefully butted up my joints doing this low humidity 'winter weather' here in Florida.

I had (have) planned on giving the whole surface two good coats of an oil based paint (first Kiltz, then exterior grade), to help stabilize it. But I was not going (did not) coat the backside that is against the considerable insulation job I did.

Here are a few photos,...

Pretty good seaming if I say so myself. I figured I could 'caulk' some of these with a flexible type cauking that would resist getting hard and brittle, and subsequently cracking?

But then look at these close-up photos of some of the 'divots' that the stapling created, both proud ones and craters....

 

 

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Posted by Doughless on Saturday, February 24, 2018 9:16 AM

That was the circumstance under which my masonite buckled.  This was in a basement in the Midwest where there may be more difference in humidity swings between winter and summer depending upon if the polar or tropical air masses are prevailing.  I assume FL is fairly humid year round.

I also noticed you have an air conditioner, which dehumidifies the air and can atleast keep the inside a more consistant level.

You may be fine.

- Douglas

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Posted by rrebell on Saturday, February 24, 2018 9:58 AM

You people may not know it but there are different spects for masonite. The stuff I used back east could be used as underlayment, the stuff on the west coast is a no go. You will not have proublems with butted seams with masonite if you do the butt  mid board like my 1x4 framed modules. Also if you can get a comercial carpet stapler, use that for attaching the masonite instead of screws, works great.

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Posted by rrinker on Saturday, February 24, 2018 12:11 PM

 Maybe crazy, but I'm thinking  large-head dent hammer could even out the staples and divots that stand proud of the board, making them all level with the surface or slightly depressed.

                                     --Randy

 


Modeling the Reading Railroad in the 1950's

 

Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.

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Posted by riogrande5761 on Saturday, February 24, 2018 6:08 PM

bearman

I am using 1/4 in hardboard with the shiny side painted for my fascia.  However there are some obvious seams between the separate panels.  I am thinking of sheet rock joint compound which can be smoothed, sanded and painted to fill in the seams.  Any one ever tried this?  If so what were the results.

That's the first thing I thought of.  Only possible issue with dry wall mud is any surface that flexes it would crack and chip away.  

Rio Grande.  The Action Road  - Focus 1977-1983

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Posted by bearman on Sunday, February 25, 2018 3:49 AM

Riogrande...I have a 1/8" hardboard backdrop and it definitely flexes as the seasons change.  I assume that the 1/4" will also flex.

Bear "It's all about having fun."

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Posted by railandsail on Sunday, February 25, 2018 7:34 AM

Doughless

That was the circumstance under which my masonite buckled.  This was in a basement in the Midwest where there may be more difference in humidity swings between winter and summer depending upon if the polar or tropical air masses are prevailing.  I assume FL is fairly humid year round.

I also noticed you have an air conditioner, which dehumidifies the air and can atleast keep the inside a more consistant level.

You may be fine.

 

Not near as humid in the winter (northern FL) as it is in the summer (very humid)

 

It was not intended that the AC unit would be running often enough to 'maintain' a house like enviroment,...but certainly while I was out there playng with trains.

I did a good job of insulating the shed, and foruntunetly I have the whole shed under the carport. That reduces the solar gain SUBSTANTIALLY.

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Posted by railandsail on Sunday, February 25, 2018 7:39 AM

rrinker

 Maybe crazy, but I'm thinking  large-head dent hammer could even out the staples and divots that stand proud of the board, making them all level with the surface or slightly depressed.

                                     --Randy

 


Did try the hammer idea, and that has worked partially. I'll likely go over all the stapes before I paint.

Wonder what 'caulk' I should use that would fill the divot holes, smooth the seam fillets between the walls and ceiling,...yet remain flexible to ride out the small movements of sheets???
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Posted by railandsail on Sunday, February 25, 2018 7:46 AM

BTW, I have decided to go forward with the paint/sealing idea for now, and watch what happens over the next several months of warm up in FL.

I will utilize some oil based KILZ i have on hand.

If everything gets screwed up I have an offer by a contractor friend to cover or replace the masonite with sheet rock.

In the meantime I am still in the track layout planning stage, and will errect some temp shelving to play with DCC and sound tech, and getting it into my fleet.

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Posted by railandsail on Monday, March 12, 2018 10:07 PM

railandsail

Seams in Masonite Wall Panels

I have a little different problem, but related. I am covering the insulated walls and ceiling in my 12x16 train shed with 4x8 sheets of 1/8" masonite stapled to the 2x4 studs of the shed.

I have very carefully keep the seams very tight, and used staples ever 6-8 inches down each side of a seam. So my seams are very well joined. The staples for the most part are 'recessed', although there are some bumps spots and flattened staples in spots where the staple didn't go recessed.

So now I am thinking about 'taping' the seams prior to painting the masonite. Drywall type taping doesn't sound to appealing, and its not like I am attempting to have a finished wall you find inside a home (i do hope to eventyally cover this masonite with paint and then a printed backdrop of some kind.

I was thinking of maybe a 2" wide adhesive tape of some kind, ....perhaps a really good duck tape or gorilla tape?? That would serve a double duty of hiding some of my 'imperfections', while subtlely 'hi-liting' my stud locations.
(no photos at this moment)

 



Seams Taped & Painted

 

I decided to go ahead and let my nice clean istallation of the masonite panels stand for now,...then watch want happens as the heat/humidity of the coming spring/summer weather does to the material/seams, etc.

I found some really heavy-duty, extra-adhesive white Gorilla Tape. I used that to tape my seams between sheets of material, and those seams where I stapled the masonite to the stud walls. I took a good flat head hammer and solidily made all the 'proud' staples and other raised portions as flat as possible, then ran a sharp trowel over the areas.  I decided to skip filling the other small divotts, and just tape over those.

Then I painted the surfaces with some oil-based (not water) Kilz paint I had previously collected. I even put a second coat on some surfaces. I consider this my 'undercoating' to the eventually sky blue painting of the 'background sky'.

Presently letting the paint thoroughly dry.

 

 

 

 

 

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Posted by mbinsewi on Monday, March 12, 2018 10:16 PM

I'm not sure what inspired you to do your walls and ceiling with masonite, but good luck with that.

Mike.

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Posted by BATMAN on Monday, March 12, 2018 10:47 PM

Do they require vapor barrier in Florida?

As far as seams go I just treated it like drywall and used fiberglass tape and Dap. Can't see them at all, go ahead get as close as you like.

  

  

 

Brent

"All of the world's problems are the result of the difference between how we think and how the world works."

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Posted by cowman on Thursday, March 15, 2018 10:05 PM

In the Sep '15 MR there is an article on how Allen McClelland used indoor/outdoor carpeting for his final facia.  It was over masonite and mentioned that it hid gaps in the masonite.

An added benefit was that you can use velcro on the back of your throttles and other light pieces and they can be placed anywhere. 

Good luck,

Richard

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Posted by railandsail on Friday, March 16, 2018 8:02 AM

mbinsewi

I'm not sure what inspired you to do your walls and ceiling with masonite, but good luck with that.

Mike.

I was inspired to use Masonite as it was thinner and light weight enough that I could handle 4x8 sheets by myself, And not being a sheet rock guy I figured I could do the job myself.
 
In hind sight, considering the amount of work I've done to try and hang it with staples, hide those staples and seams, double coat paint the stuff in an attempt to seal it up from humidity, etc, etc, .......I'd been far better off to have just paid a couple of pros to hang up the thin sheet rock. Likely done in a few hours vs my days of work.
Isn't hindsight great :)
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Posted by BATMAN on Friday, March 16, 2018 11:04 AM

I would be more worried about the staples working their way out with temperature swings loosening them up. Staples are good to hold things in place while the glue dries. I don't know anything about building codes where you are, but temperature swings and humidity can wreak havoc on structures. 

My neighbour just had to rip off the top floor of a small coach house in his backyard just because the guy that built it ran out of vapor barrier and left a ten-foot section exposed. Mold and dry rot took over in short order. 

The best way to ensure a job is done right by a contractor is to stand and watch them work with a four foot level in your hands.Laugh

Brent

"All of the world's problems are the result of the difference between how we think and how the world works."

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Posted by Dannyboy6 on Thursday, March 22, 2018 9:14 PM

I have used 3/16" Masonite on my backdrop, and perhaps the same method might be ok for you. I used screws from Fastcap that have a 1/16" head and are 5/8" long (self drilling) and then used a brad nailer with 1/2" nails in between the screws. I then roughed up the masonite with a palm sander using 50 grit paper. I then used self-sticking mesh tape and 2 layers of feathered fine drywall mud. Sanding was done with a 150 grit drywall screen. Primer, paint, all is good.

Cheers!

DanB

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