Epoxy jointing mortar
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Pablo
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Anyone got any experience of Gftk VDW805 Epoxy jointing mortar and VDW840 Polymeric jointing mortar. It's been spec'ed on a job I've been asked to take on it's just over a thousand metres of setts and flags. Setts will be driven on and jointed with epoxy and flags polymeric. Reading about it I noticed it requires a permeable bedding course. My thoughts are that this would mean spot bed laying which is a non starter. Am I confusing permeable with porous and should I assume that non waterproofed concrete and screed mixes will be adequete. Or should I just fu*k it and fire it all down as normal point it with this stuff and forget it. My worry is that because the pointing is meant to allow water through and it can't get away then the stuff will just rot a la Geofix type scenario. Jobs for a civils firm so they will have me bent over with my trousers round my ankles IYKWIM with regards liability for any failure.
Can't see it from my house
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lutonlagerlout
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Pablo
- Posts: 1990
- Joined: Sun Mar 25, 2007 10:49 pm
- Location: N/Ireland
Yeah I've always laid onto either concrete or grit sand /cement mix then slurried it. Never been a problem. Is there any method of installation whereby you can have a full bedding course that will allow water to pass through. I thought that maybe there was a difference between permeable and porous i.e sandstone would be classed as porous and MOT permeable. Tried to phone today but couldn't get any decent reception.
Can't see it from my house
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Tony McC
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The 805 is a high-strength epoxy-based jointing medium for trafficked areas. The 840 is pretty similar to Romex Easy and is a mid-strength polymeric for light foot use.
If you lay on a sand/cement bed, that will be fine. The bumpf about permeable bedding is a small technical detail to re-assure engineers. I've seen this stuff used with typical full mortar beds, and with setts laid directly onto concrete, and there's no real problem.
If you email or PM me, I'll give you a contact number for the GftK tech specialist who will be more than happy to explain all the ins and outs, and to arrange a demo area for you, if you wish
If you lay on a sand/cement bed, that will be fine. The bumpf about permeable bedding is a small technical detail to re-assure engineers. I've seen this stuff used with typical full mortar beds, and with setts laid directly onto concrete, and there's no real problem.
If you email or PM me, I'll give you a contact number for the GftK tech specialist who will be more than happy to explain all the ins and outs, and to arrange a demo area for you, if you wish
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