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 6Feb 04, 2012 7:03 pm The interlocking mechanism doesn't look like 'Uniclic', which under a variety of names is used in most quality flooring: Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Are you sure yours didn't require gluing? If indeed you do have expansion spaces at all edges, it looks as if the floor is trying to expand but the force is being transferred up at a weak join, rather than transferring laterally through the entire floor. Re: Rising boards, bamboo flooring 7Feb 05, 2012 5:51 am The mechanism looks similar, but as you say, it is not the same. Another cheap chinese rip-off, I guess. There is no glue and the supplier said none was required or allowed. The supplier is going to send someone to remove the edging around the walls to see if there is an expansion gap; my guess is that there isn't. If it turns out that there is a gap, he wants to cut a gap across the doorway - I really don't want that and I am not convinced that it will cure the problem. Anyway, from what I have learnt so far, there seems to be nothing wrong, theoretically, with continuing the foor through doorways unbroken. That is useful for future discussions with the supplier. Re: Rising boards, bamboo flooring 8Feb 05, 2012 1:38 pm Yep, you should certainly be able to continue seamlessly through a door way. Usually the installers will undercut the door jamb so the boards can just slide in underneath, but also leaving a small expansion gap under the jamb (and hence invisible). I hope you have some joy with the supplier! Re: Rising boards, bamboo flooring 9Feb 08, 2012 8:24 pm That's news to me about not having an expansion joint in a doorway. Any floating type flooring installation training I have done has always recommended breaking each room into individual rooms by the use of the expansion type cover strip. Under cutting the doorjams is a means to make the installation visually better by not having to run scotia around the door jams. It use to be around 10-12mm around the perimeter & now everyone I talk to tells me 15mm expansion. There are ways to slightly get around expansion trims in doorways, but it generally means increasing the perimeter expansion gap everywhere else. Generally the way you are supposed to look at it is "Your expansion is only as big as the smallest gap" 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 2257 |