outside tap !!

[dboi78]

here's my dilemma im fitting a outside tap for a friend, im ok with the plumbing side of things gonna tee off internal cold main and fit a double check valve !! but i have never really needed to drill through a external wall for pipe work before, my questions are, will i need to sleeve the 15mm copper with 22mm copper, what size drill bit will i need, and will i need a sds drill or will hammer be ok, many thanks in advance.

 

[dontknowitall]

I use an SDS with clutch on an extension cable with an RCD. I've a long 18mm drill bit.

Use anything that will make a hole - my choice is above - others will do things differently.

 

[Billy Bob Bob]

sds best for drilling but it will burst the outside finish and kill the wall SDS =stone destruction system

 

[dboi78]

thanks !! so would u just jab the 15mm straight through or sleeve it ??

 

[GQuigley67]

if you can drill from the outside, use a core drill around 25mm and sleeve it with 22mm pipe, you can get a backplate with 300mm or so pipe so you just slide that in and then connect inside to pipework and connect tap to backplate.

Google Image Result for http://www.ukhps.co.uk/images/comap_hose_backplate.jpg

 

[kirkgas]

copper will be effected by cement, so best to sleeve it, i use a 6mm x 400mm drill as a pilot then a 25mm drill from both sides so that i dont wreck the wall, then sleeve the 15mm copper in 19mm pvc pipe, or use 15mm plastic pipe

 

[dboi78]

by effected do u mean corrosion ?? can u use plastic pipe on compression fittings ie the tap connection ??

 

[Spike295]

by effected do u mean corrosion ?? can u use plastic pipe on compression fittings ie the tap connection ??

Copper is normally affected if it is encased in cement or mortar, it will be ok if you drill an 18mm hole & just put the copper thru, no need to worry. Yes you can use compression fittings on plastic, wether you use compression or push fit on plastic, be sure to use pipe inserts.

 

[ecowarm]

look at link, it gives the correct infomation Fitting an outside tap

 

[GQuigley67]

if it was me doing the job, it would be fitted with a 22mm sleeve

 

[Spike295]

if it was me doing the job, it would be fitted with a 22mm sleeve

Do you sleeve you boiler expansion pipes?

 

[Guest123]

I use plastic overflow pipe as a sleeve. Very cheap to buy and a smaller neater hole is used to fire it through the wall. Always drill from the outside or you'll burst the wall. A SDS drill is best. I used to cover copper pipe with Denso tape too but this is overkill.

 

[kay-jay]

water regs require pipe to be sleeved!

i use overflow pipe. sds from outside. (make sure you measure properly) so the hole is in the correct place on the inside. also using depth stop on your drill is a good idea.

i personally prefer a normal backplate elbow to the one with pipe connected to it already. reason being that when you have drilled the hole and pushed the pipe through often the holes for securing the plate crumble the sds weakened brick and/or mortar. so i fit a standard backplate elbow above the hole if possible then run pipe down to a normal elbow then through the wall.remember to insulate any exposed pipe though


KJ

 

[GQuigley67]

Do you sleeve you boiler expansion pipes?

i sleeve all pipework where needed, the way i was taught really plus if i didnt would of got moaned at by gaffer, clark of works, agent etc

 

[obseen16]

like my first gaffa used to say to me.... are you a plumber or an idiot? i used to ask some stupid questions lol. i almost fell for the left handed screwdriver gag to.

 

[SafeGasInstall]

i use 25mm drill bit ,and then 22mm pipe goes nice and easy

 

[SafeGasInstall]

Do you sleeve you boiler expansion pipes?

no ,do u ?do u sleeve ur condense ?