Subscriber & Member Login

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

Preventing envirotex from leaking

634 views
12 replies
1 rating 2 rating 3 rating 4 rating 5 rating
  • Member since
    February 2008
  • 1,606 posts
Preventing envirotex from leaking
Posted by kasskaboose on Tuesday, January 5, 2021 2:47 PM

How to create a waterbody in the front of the layout without the envirotex leaking out the front?  Should I use calk to seal the gap, or tape, or something else?  The envirotex doesn't leak from the bottom b/c I put down plaster of paris (POP). Instead, it leaks out the front. 

Also, another part of the layout has the envirotex leak from the botton despite putting a layer of POP.  How to prevent it?  Preventing the leaks is critical b/c the envirotex product is about $25.

Thanks! 

  • Member since
    March 2011
  • 859 posts
Posted by NVSRR on Tuesday, January 5, 2021 5:13 PM

 OST instructions I have seen have you put down a thick coat of base color paint before scenery started but after basic plaster form work is down.    For the front edge,  tape across the front then apply white glue around the outside edge of the tape       Luke Towan demonstrates many different situations of water at layouts edge in a lot of his moduals on you tube.   

shane

A pessimist sees a dark tunnel

An optimist sees the light at the end of the tunnel

A realist sees a frieght train

An engineer sees three idiots standing on the tracks stairing blankly in space

  • Member since
    February 2005
  • From: Vancouver Island, BC
  • 22,470 posts
Posted by selector on Tuesday, January 5, 2021 5:34 PM

New length of masking tape, the green painter's kind that has the extra surface coating that supposed to seal even better if water-based paints leak into it.  Apply across as good an outer set of surfaces as you can craft, even if you have to sand them or buff them, or scrape off something....just make sure the surface to which you will affix your masking tape doesn't make it an impossible surface to seal.

Then, if you need proof of leakage, or the seal, apply a couple of cups of 'wet' water into the prepared vessel and see if you get leaks.  Or, I would consider using my finger and running it around a thin bead of caulk set at the inner margines, wait of it to cure, and then pour you 'water' fluid.

  • Member since
    December 2015
  • From: Shenandoah Valley
  • 7,654 posts
Posted by BigDaddy on Tuesday, January 5, 2021 6:39 PM

David Popp in the Canadian Canyons video ran a bead of caulk on the edge of the plywood and glued a piece of styrene to it.  When the water set, he cut the caulk to remove the styrene.  You get a little miniscus on the edge where the water meets the styrene.  He cut that off with a sharp blade.

Henry

COB Potomac & Northern

Shenandoah Valley

  • Member since
    December 2004
  • From: Bedford, MA, USA
  • 19,557 posts
Posted by MisterBeasley on Tuesday, January 5, 2021 8:50 PM

As for the cost problem, look for coupons from Michael's.  They regularly had a weekly ad worth 40% off on one item, but that will get you a whole package of Envirotex for a substantial discount.

It takes an iron man to play with a toy iron horse. 

  • Member since
    September 2004
  • From: Dearborn Station
  • 20,323 posts
Posted by richhotrain on Tuesday, January 5, 2021 9:37 PM

I used Envirotex Lite to create a large river in an urban area. The river bed was constructed of plywood. Since I had to build the river bed in sections, I used wood filler at the plywood joints and sanded the joints even with the adjoining plywood sections. I did not use Plaster of Paris or Hydrocal to form or seal the river bed. I did use paintable caulk to seal the edges. I painted the plywood river bed and then poured the Envirotex Lite.

In the following photo, the open space is the site of the river bed.

P1010340.jpg

In the following photo, you can see where I applied wood filler to plywood joints, then sanded the wood filler and painted the river bed.

P1020258.jpg

In the following photo, you can see where I applied caulk along the edges and then painted the caulk to match the river bed.

P1020262.jpg

In the following photo, the river bed opens up to the aisle, so I needed a way to contain the Envirotex Lite. 

P1010664.jpg

In the following photo, you can see the poured river, the Envirotex Lite epoxy. Rather than building some sort of dam to contain the pour, I let the Envirotex Lite spill over into a tray on the floor. There was very little waste at the edge of the layout, and there were no leaks in the bottom of the river bed.

P1020286.jpg

Alton Junction

  • Member since
    September 2004
  • From: Dearborn Station
  • 20,323 posts
Posted by richhotrain on Wednesday, January 6, 2021 7:12 AM

kasskaboose

How to create a waterbody in the front of the layout without the envirotex leaking out the front?  Should I use calk to seal the gap, or tape, or something else?  The envirotex doesn't leak from the bottom b/c I put down plaster of paris (POP). Instead, it leaks out the front. 

Also, another part of the layout has the envirotex leak from the botton despite putting a layer of POP.  How to prevent it?  Preventing the leaks is critical b/c the envirotex product is about $25.

Thanks!  

What is the surface of the river bed?  Plywood? Foam?

Rich

Alton Junction

  • Member since
    February 2008
  • 1,606 posts
Posted by kasskaboose on Wednesday, January 6, 2021 3:07 PM

Fantastic pictures.  That's what I want to emulate.  Of course, not as good!

Rich: the riverbed surface is foam.  I coverered the area with Plaster of Pasis before painting it.

  • Member since
    May 2010
  • 7,430 posts
Posted by mbinsewi on Wednesday, January 6, 2021 3:30 PM

Nice Rich.  The perfect color of the Chicago River!

Mike.

  • Member since
    September 2004
  • From: Dearborn Station
  • 20,323 posts
Posted by richhotrain on Wednesday, January 6, 2021 3:51 PM

kasskaboose

Rich: the riverbed surface is foam.  I coverered the area with Plaster of Pasis before painting it.

Do you think that the river bed is leaking through the bottom where the foam seams meet?

One good thing about Envirotex Lite is that it flows like syrup, not like water. So, you have an opportunity, and the time, to work with it. Using something like a Popsicle stick or a paint stick, you can stop the pour short of the front of your layout and then coax the pour to the edges without much waste over the front edge.

Rich

Alton Junction

  • Member since
    September 2004
  • From: Dearborn Station
  • 20,323 posts
Posted by richhotrain on Wednesday, January 6, 2021 3:59 PM

kasskaboose

Fantastic pictures.  That's what I want to emulate.  Of course, not as good!

Rich: the riverbed surface is foam.  I coverered the area with Plaster of Pasis before painting it. 

Thanks, Mike. On my first attempt on my old layout, I used Royal Blue - - LOL. It didn't look like the Chicago River. In fact, I'm not sure what body of water it looked like. This time around, I went on Google Maps and studied the aerial views to get the color right.

Rich

Alton Junction

  • Member since
    February 2008
  • 1,606 posts
Posted by kasskaboose on Thursday, January 7, 2021 2:48 PM

Thanks everyone for the help.  I added another layer of plaster on the bottom of one lake and calk around the edges of both.  Hopefully, that all works.

  • Member since
    September 2004
  • From: Dearborn Station
  • 20,323 posts
Posted by richhotrain on Thursday, January 7, 2021 3:37 PM

Please keep us posted on your results.

Rich

Alton Junction

Subscriber & Member Login

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

Search the Community

ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT
Model Railroader Newsletter See all
Sign up for our FREE e-newsletter and get model railroad news in your inbox!