Thread: dryloc tombstone

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I made an oblisk to add to the graveyard this year among a few others for this years setup. Something i noticed was i had the oblisk in the sun just ouside the garage to dry and i noticed bubbles started to form almost like air pockets under the surface. Luckly i was standing by it outside and didnt leave it and i caught it quick. Question is does anyone else have this problem. I leave more than recommended drying time in between coats. The few bubble that did form i hit them with a needle reales the pressure and drug it back in the cool garage where the coolness retracted and the bubbles subsided. Now if i put this out in october for the month am i going to have that problem, and is there a way to get around this for future projects? thanks again

DA

Could it be caused by the sun's heat? There could have been airpockets and the heat made the pocket expand. It could also by air leaving the foam. Once again heat would be the culprit.

All my stones are Dryloked and have no problem when they are displayed for a month prior to Halloween. Been through all kinds of weather and they handle it fine.

Sounds like it was going wonky becuase it was painted out in the sun.

I think it would have been cool to have an obelisk that had bubbles that pulsed. I wonder how to recreate that for repeatability?

is it possible that the foam was off gassing because of the heat?

Air in foam trying to escape thru the dryloc when you had it in the sun. FYI- moving air dries water based paints,sun will "skin" the top of it & cause air to lift paint away from it & not adhere properly......either small bubbles or even large blisters. The under layer will still be wet-goo paint.

Oil bases flows in sun light while drying ( after you applied-preferably in shade ), water based should be painted away from direct heat / sun, let air dry for 1-2 hrs min in shade, sun "bake" only after it is thoroughly dry.

Use a fan on a low or med setting to help "flash" off the water from the acrylic / water based paint is best if you need to dry it somewhat fast. A hair dryer works on low if you are doing small thinly applied areas like airbrushing / spraying, or thinned out brushing.

I had that happen once but I was Painting in direct sunlight. Now I do like mentioned above and paint it the shade and once dry I bake in the sun.

Sounds to me like you are painting on the side with the thin plastic cover on the foam board. If I had to guess I would say that's your problem.


The heat from the sun and the drylock isn't the problem because you can put latex paint/drylock on in direct sunlight. Well it is a heat problem but only because of the plastic on the foam board . Put the same drylock on a brick, a concrete block, or wood in direct sunlight (40-100 degrees) and I bet you don't get air bubbles. Put the latex paint or drylock on a wall with wallpaper and I bet you get some air bubbles in the wall.

Do like Big Nick said and your problems are solved or you can use a roller and put a light coat of latex paint on the the foam then use a hair dryer to dry it and punch the bubbles as the come up. Once it drys you shouldn't get the air bubbles in it again so now put the drylock on it and set it in the sun to dry.

no theres no plastic on the foam. I did not paint in direct sunlight but i did put it in the sun after it was dry, thinking it would be a good idea to bake it. I was gone for a few days being a truck driver and all. Just got back its in the garage and there is no sunlight in there it did get up to 70 plus today and apparently from the looks of it she bubbled some more on the top. So heat is the cul;prit weather its direct or indirect

thanks again

DA

ill give that a try bignick thanks