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 Post subject: Filling The Gap
PostPosted: Sun Sep 03, 2017 6:59 am 
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The sealant in the expansion joint (right name???), between my original building and a newer 16 year old extension, is cracked and broken from the roof to the ground and clearly needs replacing. Is there a particular kind of mastic produced for this purpose, or is there any other product that would suit the purpose just as well? The gap between the metal strips bordering the joint is around 10 - 12mm wide.


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 Post subject: Re: Filling The Gap
PostPosted: Sun Sep 03, 2017 3:18 pm 
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Attachment:
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The joint in question.


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 Post subject: Re: Filling The Gap
PostPosted: Mon Sep 04, 2017 10:20 am 
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polyurethane i think its spelled. is the metal strip rusted or is it ss?rake out all the old stuff an gun this catridge stuff in an tool it off, ask mfr if any primer is needed for a wide joint. look at flashing between roof an house for movment


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 Post subject: Re: Filling The Gap
PostPosted: Mon Sep 04, 2017 8:31 pm 
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wes56 wrote:
polyurethane i think its spelled. is the metal strip rusted or is it ss?rake out all the old stuff an gun this catridge stuff in an tool it off, ask mfr if any primer is needed for a wide joint. look at flashing between roof an house for movment

Metal strip appears to be galvanised and there doesn't appear to be any rust. Will do as you say.


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 Post subject: Re: Filling The Gap
PostPosted: Tue Sep 05, 2017 5:38 am 
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wes56 wrote:
polyurethane i think its spelled. is the metal strip rusted or is it ss?rake out all the old stuff an gun this catridge stuff in an tool it off, ask mfr if any primer is needed for a wide joint. look at flashing between roof an house for movment


BTW, a belated thank you for your advice.


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