Browse Forums Flooring & Floor Covering Re: Rising boards, bamboo flooring 4Feb 03, 2012 6:02 pm Internal and External Building and Colour Consultant Online - Worldwide http://www.denovoconcepts.com Re: Rising boards, bamboo flooring 12Feb 10, 2012 2:32 am Mmm, now I don't feel quite so confident that the lack of doorway expansion gaps is not the problem. However, to me it seems likely that a floor has no business expanding out into the hallway unless 'pushed'. In other words, if it has sufficient expansion gaps around the walls, it has no reason to expand out into the hallway, but once the gap is used up, the floor will be pushed by the wall (ie. it will push against the wall), potentially expanding out through the doorway. My original guess was that expansion was governed by changes in temperature but this link http://www.oriental-bamboo.co.za/faq/moisture-content-calculate-expansion-of-bamboo.html tells me that humidity is a more important factor, determining the "equilibrium moisture content" (EMC) and hence expansion. In the table at this page (and logically), the moisture content decreases with increasing temperature, implying shrinkage. But I presume that there is opposing thermal expansion. Which is more important? Re: Rising boards, bamboo flooring 13Feb 16, 2012 8:45 pm In a perfect world the new flooring is left onsite for a few days to allow it to increase or decrease in moisture content to your residences environment before the installation takes place. If your residences climate had the humidity increased alot then the flooring will expand & hopefully the 15mm or more of expansion allowed by your professional installers would tolerate this expansion without touching walls etc & buckling your new flooring. Building Standards; Getting It Right! Is this acceptable in a new house build. Floors where installed by builder. Already chips in board and skirting is not flush 0 195 I'm about to put down some Merbau. Is it necessary to oil underneath the boards before laying? 0 2202 |