How to Install a Rubber Flat Roof - Part 5 - Internal and External Corner Details

[@notsosimple23]

As an installer for Firestone. We got told on 1.16mm Fire rated blankets (Marked FR) as you show here getting installed, instead of the pond liner type ones at 1.0mm. The writing has to be facing up as the underside is coated only. 🤔 This was installed upside down - luckily no fire 😊

[@plytechukltd3475]

Dear Steve, This is an LSFR sheet for the EU (it's just that the fold in the rubber did not allow the LS to be seen). With the LSFR sheet there is no specific side which needs to be installed pointing up as the fire retardent chemicals are distributed throughout the sheet. This may be different with the US sheet? Regards Marc

[@notsosimple23]

Plytech UK Ltd I’m based in East Yorkshire also. We had to turn our Epdm rolls over as the manufacture of the rolls was rolling them outside in, so we fitting them as the manufacture was producing them. To be told by an authorised Firestone inspector. He will not issue the 30yrs warranty until We installed correctly. So the rest of the rools we had in stock for jobs, we had to make sure the writing was facing up (FR SHOWING) Different rules / different guidelines. Guess we also have the strict firestone verified checker then for the warranties.

[@plytechukltd3475]

Hi Steve, Apologies this comment has been overlooked. The EPDM performs the same whichever side you put down. Some prefer the serial number up in case there are any warranty issues, then it is easier to prove which supplier the rubber has come from. My preference would be to install with the serial number down and make a note of the serial number against the warranty info - that way the customer does not potentially have to look at a print across their roof. Hope this helps.

[@EricFapton]

The only problem I have with these videos that are always made in warehouses is these are not real conditions. Installers do not have time to handle the rubber 3 or 4 times before glueing and setting it when the sheet is 130 to 150 degrees and burns you every time you touch it. The sheet will be set up to wall as close as possible and glued 100% and none of those cuts will be made till it’s actually being put in.

[@ivanzucconi]

Sarnafil welded on corners with hot air and rollers gives me more peace of mind than using bonding materials. However, your job looks and has been made well.

[@rubberflatroof2188]

Hi Ivan, we are glad that you like the look of the external corner. If we can help you with any EPDM enquiries please let us know. Our supplier also has a puncture & chemical Resistant hot air weld system (FiberTite) that may be of interest. Best Regards RubberFlatRoof Ltd 01392 927729

[@robertgissy2851]

Great roofers did it all without actually stepping on it

[@dirtywally2033]

Next time use more rubber, and cover the top of the wall and curb. Leak disaster if you think the cap metal will keep water from penetrating, or disallow condensation.

[@johnrweiss]

Why didn't you explain what you're doing instead of the elevator music?

[@davidscott3292]

Where you have a rooflight involved, is it easier to have the membrane in two pieces and join them, as shown here?

[@plytechukltd3475]

Hi David, joining the membrane is an option and can make the job easier. However any join in the membrane is best avoided if at all possible as any additional joins or cuts can create an area of failure (especially if an installer is new to techniques).

[@stuartsneddon6617]

Wish we could stand on floordoing aflat roof

[@fredjones1238]

do one with scupper in the corner

[@rickphillips5098]

I wish they would do a real project on a roof with 40mph wind blowing!!

[@gary24752]

Why no cricket in the corner to direct water out of the corner? How come you didn't take the rubber up and over the parapet?

[@fionadeniro1672]

I have a question. Is there supposed to be any pockets where the rubber roof meets the side of a shingled barn side? Isn't supposed to be tightly secured?

[@plytechukltd3475]

Hi Fiona, Thank you for your question. If you coudl send across some pictures this might give us a better idea of what is required with your specific roof details. Please feel free to use our email [e-mail]

[@fudgewaa2394]

Can't you cut the rubber on the internal corners? And use the tape to make an internal corner or is folding the rubber the only way?

[@plytechukltd3475]

Hi fudgewaa, You could cut the rubber in the internal corners but any extra cut is a potential for a leak. My preference would always be to have fewer cuts if possible. As the EPDM is very flexible it is quite easy to fold into the internal corners, however I would advise checking that no factory welds fall into the internal corner as the rubber can become thicker in these sections. Hope this helps.

[@triumfdula8830]

Can this Rubber be applied on walls too, if not what is an alternative to wrap the walls that have no overhang ?

[@plytechukltd3475]

Hi, Yes the rubber can be adhered to brick or concrete using solvent adhesive. The flashing tapes can be adhered to most other materials also using the butyl primer for flashing tapes. I hope that this helps. Regards Marc

[@starbase606]

Thanks, nice tutorial. My roof install is going very well. thanks.

[@lorenreid5858]

Has the chip board not got a risk of puncturing the rubber?

[@plytechukltd3475]

As long as you clean the roof well then you should be able to adhere down with contact adhesive. Any further questions just call us on 01392 454810 - Thanks

[@masterpiece8601]

How much does it cost one square meter?

[@rodmcdonald4707]

can this product be used under a green roof situation ?

[@plytechukltd3475]

Hi Rob, Yes, EPDM is extensively used for Green Roof applications and is a very durable product that can often be installed in a single sheet which further reduces any water ingress possibility.

[@mikerobinson3156]

Its the milk man

[@PeakyBlinder]

Does this roof rely on a mastic bead atal ?

[@plytechukltd3475]

Hi Peaky_Blinder The roof edge is finished with either a mechanically fixed trim edge or with a tape system. Please let us know if you require any further assistance by emailing [e-mail] or calling [phone]

[@robertgissy2851]

They cannot be confident about seal if silicone is being used . Using this method start the van leave no contact don't look back .

[@PeakyBlinder]

@@plytechukltd3475 hi, not the edge, you can use spread trim for that, I'm talki g about the external corners in the middle of the roof, How do you deal the rubber flashing after you cut the EPDM, Being as it's impossible to vulcanise when you glue the flashing on how do you protect the glue that is vulnerable and will break down under water. How do you protect the glued rubber.

[@PeakyBlinder]

@@robertgissy2851 the call it liquid rubber but it does rely on mastic, I have seen lots of failed EPDM roofs .

[@nonsheep5823]

Hardly fucking rocket science

[@dachproshop]

nice video!👌

[@amiresteki6434]

Please could you describe (writing as subtitle?) what are the measurements around the edges and how much etc.? and where for the novice fitting EPDM. Many thanks

[@plytechukltd3475]

Dear Amir, the subtitle "Allow to tack off" is referring to the contact adhesive which has to be allowed time to go tacky but NOT stringy. This will then be ready for adhesion. The minimum upstand required in the UK is normally 150mm. We would advise allowing a 200mm excess on each edge of your EPDM rubber to ensure you do not run short. We aim for a 45 degree angle for both the internal corner fold and the external corner cut to make this look neater. If you are interested in a course we offer a one day training course at our Exeter warehouse. Please contact Plytech UK Limited on 01392 454810 if you wish to discuss further. Kind Regards Marc

[@mikemcneal4952]

Not a roofer the curb not even flash right wouldn't pass inspection

[@8477willy]

geweldig goed werk

[@mohammedrafiq1046]

Flat roof gudring ege

[@Bob-oo7sm]

I'll think I'll stick to grp system

[@martindabrowa1565]

GRP you must be as crazy as this guy with the rubber shit..! Get a good Felter or a Sarna roofer.!!

[@craftyjonesy313]

i was told you technically have the rubber either way up and either way was waterproof! however its ugly and lazy to have writing side showing!

[@mikerobinson3156]

Im a firestone guy

[@rhayward31]

Dreadful music 🤔

[@r8ly.]

yes

[@jerrydawg4434]

As a building envelope consultant of 35 years I can't take this video seriously because attaching a membrane to OSB is just about the dumbest thing in the world. You have to use Quality Base materials that when they get wet will not turn into oatmeal

[@macsmith6216]

Then you don’t have a clue what your talking about OSB3 is designed for this and EPDM manufacturers approve this OSB3 is waterproof

[@jerrydawg4434]

@@macsmith6216 every investigation I do on a failed epdm roof always has what's left of OSB.... I suppose you think zip is waterproof also lmfao@u

[@baldyslapnut.]

Hello Deputy, can you tell us what "should" be used instead of OSB3? If a waterproofing layer has failed, nothing cost effective is going to mitigate water ingress except a second waterproofing layer...

[@mikerobinson3156]

Rediculous ive been installing epdm 17 years can u make it take longer i would fire that jackwagon and throw his tools in the dumpster its painfull to watch this

[@chuckshipley9917]

I liked the straight edge for his corner cut. His chalk outline for his primer was pretty good too.

[@TheMattboudreau]

No

[@mikerobinson3156]

Yeah you could do it this way but no pro ive ever seen would i worked for big companies like single source and others No no no

[@randallgilley9706]

Rookie

[@michaelbuckley359]

Wrong

[@jogog9204]

Such bullshit !!

[@missteryguy]

everything you did is wrong

[@plytechukltd3475]

Hello Missteryguy, Thank you for your feedback if you have any extra tips and pointers then please post them up or advise - I admit there are a number of options for completion of the internal corner pigs ear and this mostly comes down to personal preference. With regard to the External corner Rubberall method is a belts and braces method using 2 flashing details (150mm and 300mm) to ensure that any potential points of failure are covered in duplicate. I look forward to hearing from you. Kind Regards Plytech UK Ltd

[@rasaclayworks2528]

I don't think so, and this troll didn't say what was wrong. You did the inside corner internally, and as long as it sloping towards the roof, how can that be wrong? Using 2 flashings on the corner, I think is an excellent idea. So often people don't overlap in the right direction - but you did. I think it was very instructional.

[@jamesnapper3032]

there is always 1 prick that knows better

[@waldronjames334]

@@plytechukltd3475 7k