Browse Forums Heating, Cooling & Insulation 1 Apr 10, 2015 10:39 pm Quick question to anyone in the know. Just wandering how long is too long to leave wall wrap exposed to the elements? Our wall framing has been completed and not knowing if our bricklayer is going to suddenly spring it on us that he is ready to do our bricking we have decided to wrap the house ready for him. We have no roof yet and won't until the bricklayer is finished so it will be completely exposed. A scan of the wall wrap literature is confusing and contradicting. Answers ranging from covering it ASAP after install to it will be ok for 3-4 months. Thoughts and opinions??? Re: Wall wrap and length of time exposed 2Apr 12, 2015 8:34 am Some of ours has been exposed for over a month. My husband was also concerned and contacted the manufacturer (Fletcher Insulation) and they say a few days in summer and a bit longer in winter before it requires cladding. I guess it's standard practice leaving it for these extended periods cause we see it all the time. Even our builder who is building his own house has exposed wall sisalation for long periods of time. We should have all our bricks done by Tuesday which will please my husband. The literature also states not to have wet mortar touch it, but that would be nigh on impossible. Lynne Re: Wall wrap and length of time exposed 3Apr 12, 2015 3:52 pm Thanks Lynne for your reply. I'm also guessing it will be ok for a while given its advertised as 'great in reverse builds'. Matter of interest a) does your wall wrap look any different than a month ago and b) do you know if your wall wrap was a vapour barrier products designed to reduce the transmission of moisture into the home. Not sure if this makes a difference or not?? Re: Wall wrap and length of time exposed 4Apr 12, 2015 4:13 pm I installed exterior wall wrap as I installed the external cladding. I.E. I wrapped only one wall at a time and only 1200mm high at a time. However the exceptions were the entry and the gable walls as I needed scaffolding to complete installation to the top of the gable walls and I left the entry till the very last so I could use up the shorter offcuts of cladding. The wall wrap in these 2 areas were left exposed for up to 3 months. During strong winds the ends of the sarking were flapping and the staples started pulling through. By the time I got around to finishing the cladding in these last areas I could see daylight though the sarking. I simply replaced the damaged sarking. This cost me nothing as I had half a roll of sarking left over. Just before your bricklayers are about to start, inspect the wall wrap and only replace where there is obvious damage. l Re: Wall wrap and length of time exposed 5Apr 12, 2015 4:59 pm Thanks Beetaloo. We too are also only wrapping half at a time as we will need scaffolding for the rest. At least only half of it will be exposed for period of time. (Albeit very exposed) We have a very good, yet unfortunately very busy bricklayer so getting a re-start date on the brickwork is like pulling teeth LOL. Add working full time and this being a mainly weekend project by my husband and i, and the wall wrap is just going to have to go on early just in case he starts our job. I could ring the company rep but i'm guessing their answer is to not leave it exposed at all. The wrap itself was surprisingly quite cheap in comparison to the rest of the build so replacing any damaged parts is definately an option. I reckon we can install the wrap quicker than he can lay bricks though just quietly! Build thread: viewtopic.php?f=38&t=75302 Re: Wall wrap and length of time exposed 6Apr 12, 2015 7:19 pm gandn Thanks Lynne for your reply. I'm also guessing it will be ok for a while given its advertised as 'great in reverse builds'. Matter of interest a) does your wall wrap look any different than a month ago and b) do you know if your wall wrap was a vapour barrier products designed to reduce the transmission of moisture into the home. Not sure if this makes a difference or not?? Ours was SisalTuff 456 which can and was used for both wall and roof. Yes, it is suppose to be affective against moisture penetration, heat, etc... In some areas the staples came out and it did split on some corners which we repaired. Apart from being extremely dusty due to the dry weather after it was installed it didn't look too much different from new. Maybe a slight fading particularly on the northern and western sides. Lynne Vapour permeable wraps are recommended for any climate and main think it is allow walls to breath (i.e. remove water vapour) while at the same time, providing protection… 4 9763 Building Standards; Getting It Right! Hi all, My neighbour has built his 15m long garage on our boundary. 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