Browse Forums General Discussion 1 Jun 17, 2008 10:26 pm i joined this forum only a few days ago, and i've got literally 1000s of questions, most probably on the technical side - i'm not sure how many builders and tradies post here.
anyway i am building retaining walls for my backyard reno. although i have zero experience, i get the basic theory of building a brick wall. however some guides recommend installation of a damp proof course (DPC). this site explains DPCs: http://www.diydoctor.org.uk/projects/dpc.htm what i don't get is - if you put a plastic membrane between two brick courses (rows) - won't you break the bond? in other words, does the mortar bond to the membrane? i just can't see it. sorry if that's a dumb question or maybe too technical but if anyone knows i'd love to hear the answer Re: building a brick wall - damp proof course? 2Jun 17, 2008 10:31 pm Not really applicable if its just a retaining wall Re: building a brick wall - damp proof course? 3Jun 17, 2008 10:38 pm not really required for a retaining wall though you should seal the rear of the wall (the side where the dirt is) with a membrane (either a rubber based paint or plastic sheeting) to stop any seepage thru the wall from moisture in the ground. Re: building a brick wall - damp proof course? 5Jun 18, 2008 9:11 am Usually Brick walls are built with piers to stop this. A brick wall with no DPC would still be vulnerable without piers or something to support against.
How high is the retaining wall you are building? is it dead straight? Re: building a brick wall - damp proof course? 7Jun 18, 2008 10:16 am zaff Usually Brick walls are built with piers to stop this. A brick wall with no DPC would still be vulnerable without piers or something to support against. How high is the retaining wall you are building? is it dead straight? two garden retaining walls - one is straight, one makes a P shape. both will have "L"s at each end for stability as well as pillasters. _Al_ Perhaps you shouldn't be building brick walls if you don't know what you are doing. It's not just you who will be walking past your mini people crusher. it's only a 500mm high garden retaining wall. i just won't use a DPC i suppose. they won't fall down - i just don't understand how a DPC works. Re: building a brick wall - damp proof course? 8Jun 18, 2008 11:47 am This site might be of use to you. There is alot of info on all things and everything relating to many things!
http://www.*.com/index.php dpc 10Aug 11, 2008 10:23 am a damp proof course does not have to use a plastic membrane which DOES weaken or even break the bond. The DPC plastic roll is mainly used on brick veneer where the wall is attached to a frame. Another method of creating a DPC is using a mortar additive with silicone or the like. That said retaining walls usually require a damp-proofing at the rear of the wall known as tanking or parging. This is usually a bitumenous paint applied to the back of the wall. Depending on the situation you will have to relieve the hydrostatic pressure behind the wall by means of drainage for the water. This is done through the use of an aggie drain connected to stormwater or by using weep holes in the brickwork. Or of course you could employ the services of a bricklayer... who knows what they are doing. No offense intended. Have look at your house plans and you will probably find that brick articulation joint has been missed. Maximum allowable spacing is 6M or 5.5M for a wall with window… 17 16729 Hi all Am new to this forum. I want to get some ideas/info about how to manage an 80 year old factory restoration to convert to a residence. The factory floor is concrete… 0 3429 3 7493 |