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Roofing and Siding since 1985
Sat, May 16 2026, 2:08pm [ Login ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 1, 2, [3] ]
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Date Posted: Sun, Sep 15 2002, 6:44am
Author: james
Subject: spotty leaking on a tin roof

what is the best stuff on the market i can use to patch my leaky tin roof? i've seen some stuff they sell in a spray can that sprays on and dries and looks like liquid tar. does this work?

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Replies:

[> Re: spotty leaking on a tin roof -- A Roofer, Wed, Sep 18 2002, 4:40pm

As a contractor I usually use a product made by Gilsonite. This product is marked on the can for professional or industrial use only. I'm not sure if the general public can get it. They are asphalt coatings that are either emulsion or solvant-based.

Asphalt emulsions are highly recommended for most circumstances, especially under reflective coatings. They are solvant-free and have great stability, longevity and freedom from flow or sag regardless of slope or temperature. As they are water based they require adequate time to dry before exposure to rain or cold temperatures.

Solvant-based asphalt coatings have high penetration and are recommended on old dried out roof surfaces or where there is threat of rain or very cold temperatures before an asphalt emulsion could cure.

As far as products available to the public I saw some stuff at Lowes that I believe is also available at Home depot called Snow Roof that had some elastormeric properties that would probably work for you. These are roof coatings and not for patching. You don't need to coat your whole roof but you'll want to coat the whole problem area from the top down to at least where the problem is occurring.

As far a spray stuff in a can, sounds like the truck bed lining stuff I've seen at Shucks Auto Supply. Might be a bit rinky dinky but for a nonprofessional trying to save some money, something like that stuff might work out for you but you are your own ginny pig here and I have no experience or knowledge of any roofing product that comes in a spray can. I imagine its probably a temporary solution.

Hope this helps,
Tim Soth / A Roofer


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[> Re: spotty leaking on a tin roof -- historic roofing, Sun, Oct 13 2002, 7:35pm

use a roofing cement and a fabric, apply directly to whole,do not coat the whole roof with a asphalt base material it will do only harm unless there are to many holes and then you should replace I do not know were this concept got started but if you ask the makers of tin they will tell you the same thing. (Follansbee)Use a water bmetal paint ad primer.


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[> Re: spotty leaking on a tin roof -- A Roofer, Wed, Oct 16 2002, 2:13pm

I'm not sure whether "historical roofing" is for or against my recommendation. Of course if the structural integrity of your metal roof has degraded to where there are holes in it or you can no longer walk on it should be replaced. I figured that goes without saying. If you question my recommendation you can call the Gilsonite manufacturing plant in Portland,OR toll free at 1-800-851-1131. Tell them that you are considering coating your metal roof with product "810 Standard Fibered Aluminum Roof Coating" and was wondering if that would be all right. They'll tell you that is what this product is made for. They are also on the web at henry.com but I couldn't find this specific product on their site. I've put this on roofs over five years ago and it still is performing great today. I'll take a picture to post here next time I install some. In what way does it ruin your roof? These are products that improve the longevity of a failing metal roof. Of course it won't be a new metal roof but it will be a functional roof keeping the water out.

You can find some info on What is Gilsonite here.

And as far as Follansbee, I've found its an architectural stainless steel. Sounds like a spendy product and I don't believe it is installed up here in the Northwest at all. I would have heard of them by now. Their product description is HERE. The roofing suppliers up here haven't heard of them. I bet if you gave them the specs on 810 they would OK it. I'm not sure since their product is stainless steel though. I think that "historical roofing" is unfamiliar with Gilsonite.

Tim Soth / A Roofer


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