Traffigard Tune-up

All roof and deck membranes have a propensity to show movement on plywood substrates. This is exibited as “tenting” or “ridging”, a peak in the membrane above the plywood joins. With Traffigard Fibreglass, which is quite a hard membrane, designed to be walked on in a deck situation, these ridges can over time, due to expansion and contraction of the plywood split open, allowing water to enter through to the substrate.
It is part of the Traffigard System specification that regular inspections are made and any untoward excessive movement in the substrate which causes ridging or wrinkling of the Traffigard is attended to. It is recommended that a recoat is done every 7 years, sometimes less if heavily trafficked, and at the same time to attend to any tenting, ridging or winkling of the fibreglass reinforcement.
We refer to this as a “tune-up”
An example of a basic tuneup is shown below, in this case a small roof.
hover cursor over image for text description, click on image for larger size image (opens in new tab)

Overview of Process

roof at start of work, dirty, tented, wrinkled tented membrane over plywood joins is ground out 70mm wide by 3mm deep new epoxy filler and tape over plywood joins surface is soaked with degreaser solution ready for pressure washing moss lichen and dirt removed by pressure washing entire roof is sanded, to level off epoxy and roughen surface for new coating after sanding, ready for joint bandages chopped fibreglass matt and Traffigard bandages over plywood joins second coat applied over bandages, Traffigard Unisheild 3 part epoxy coating entire roof primed with hydroepoxy (or formstick) primer first coat of Traffigard Unisheild 3 part epoxy Topcoat being applied finished re-coat

Process again, closer view

roof at start of work, dirty, tented, wrinkled tented membrane over plywood joins is ground out 70mm wide by 3mm deep new epoxy filler and tape over plywood joins surface is soaked with degreaser solution ready for pressure washing moss lichen and dirt removed by pressure washing entire roof is sanded, to level off epoxy and roughen surface for new coating after sanding, ready for joint bandages, delaminated membrane in gutter sanded back chopped fibreglass matt and Traffigard bandgaes over plywood joins and in gutter bandaging completed second coat applied over bandages, Traffigard Unisheild 3 part epoxy coating entire roof primed with hydroepoxy (or formstick) primer first coat of Traffigard Unisheild 3 part epoxy Topcoat being applied

Gutter Repairs

creasing and wrinkling in gutter, small split causing leak inside wrinkled membrane is ground out ready for repair reverse view of previous image fibreglass and Traffigard compound repair to gutter the gutter on completion of repairs

Plywood Joint Reinforcement

ground out recess 70-75mm x 3mm deep Epofill epoxy filler is applied and reinforcing tape embeddedclose up of the filler tape process another view of the joints being reinforced another view of the joints being reinforced joint is overfilled ready for sanding flush when hardened

Repair and new Traffigard Lamination

A further upgrade is available, which involves adding another layer of fibreglass lamination, on top of the joint repair process mentioned above. The specification as follows;
Bodycoat: Apply Hitchins’ Traffigard Primer Bodycoat undiluted at 2m2/L, immediately followed by embedding in 300 gsm Chopped Strand Fibreglass Mat (side edges frayed) and wet out fibreglass with more Hitchins’ Traffigard Primer Bodycoat. Leave to dry.
Traffigard membrane is to be flashed up walls and parapets minimum of 150mm, or where cladding or doors cannot be removed, to maximum height possible.
Fill coat: Sand, sweep and apply a further coat of Hitchins’ Traffigard Primer Bodycoat undiluted at 3.5m2/L. Allow to dry for a minimum of 4 hours, depending on temperature and humidity.
Top Coat: Selected Traffigard Top coat or Unisheild 3 part epoxy Topcoat to colour of choice.

An example of a Tune-up incl. new Traffigard Lamination is shown below. This deck over a garage is of Hardies cement sheet, which had the joints filled with sealant, and the sheets coated with a hard paving paint.
hover cursor over image for text description, click on image for larger size image (opens in new tab)

cement sheet deck with sealant removed reverse view of previous image grinding out a recess along the sheet joints replacing the screws with longer stainless steel screws recess and joint cleaned out ready for filling deck coated with Formstick primer applying Epofill 604 and tape to the joints close view of recess filled and taped 2nd coat Epofill to flush off grinding filled joints off flush and removing paving paint joint repair completed applying Formstick primer to deck strips of fibreglass cut ready for lamination with traffigard compound body coat joint bandages completed and dried, starting the fibreglass lamination of the whole deck area laminating with traffigard body coat and 300gm/m2 fibreglass more lamination almost done later closeup view of the finished topcoat the finished deck, no joins

Another example of a simple overlay lamination

hover cursor over image for text description, click on image for larger size image (opens in new tab)
a simple lamination overlay on a small deck working back away from the doorway finished lamination bodycoat 2 layers of Topcoat and complete

Advertisements