Evans Bay - Overlay of failed torchon membrane roof

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Spec.
Cut open wrinkled and buckled areas and reseal down .
Lay 4mm thick APP base/underlay sheet and fix down with 2" sciewashers and stainless steel screws through existing membrane into plywood substrate.
Lay 2nd layer Imper Paralon ARD/HS Plus Green Mineral surfaced APP membrane to underlay
Remove existing membrane from concrete parapets and apply new membrane
Form collars to pipes and upstand to skylight kerbs
Fit new Coloursteel .55 guage parapet cap flashings using hidden 3mm aluminium strap fixing bars

Photos
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Unit 2, 28.07.04 leak, top edge of the gutter has come apart Unit 2, 28.07.04 leak, top edge of the gutter has come apart, closer view  
Unit 2, 28.07.04 leak, removing the granules ready for repair Unit 2, 28.07.04 leak, repair completed    
Unit 4 leak 18.05.04?. Rainwater head for Unit 5 gutter outlet fitted after roof completed, plaster not finished, bare timber framing visible Unit 4 leak 18.05.04?. Rainwater head for Unit 5 gutter outlet fitted after roof completed, plaster not finished, bare polystyrene. This is Unit 5 side of the header box.
Apts 1-5 The rainwater header box in pix 1& 2 can be seen to the left of the TV aerial Apt 6
Apts 8-10 Typical ridging/ buckling/ wrinkling, Unit 5
A 2nd example of ridging / buckling of the membrane A 3rd example of ridging/buckling
Typical lap failure at a parapet wall, (since repaired) Severe buckling in internal gutter, Unit 1
Buckling of the membrane in a internal gutter The parapet poly/plaster cap has cracked and been gobbed up with silicone sealant
Another section of capping that has cracked, Unit 5 Typical gobbed up Sky TV aerial fixture, and lap failure, Unit 7 (lap since repaired)
The top of the rear parapet wall is not level The parapet poly/plaster cap is not exactly straight and true either, some loose laps in the membrane, Unit 7 (since repaired)
starting the re roof job, guiding the pallet forks in for lifting off the ground guiding the landing of the pallets on the roof top
a 90kg bottle of propane arriving on the roof top overview of the roof loaded for re-roofing
welding the lap on the base sheet, washers and screws fitted under the laps fitting more washers and screws at the laps
welding the laps again Apt#1 base sheet fitted to Apt # 1
finished for the day, roof cleared and material bundled up, rain forecast overnight the next day, fitting the sciewashers with SS Screws to the perimeter and corner patterns
close up of the closer spacing of the washers and crews at the corners, the red granules off the base sheets have been blown around the roof during the overnight storm the old fella laying the green mineral/granule cap sheet
making progress with the horizontal green cap sheet, quite windy, the sea chopping up a bit Apt 1 horizontal completed
laying the gutter Apt 2 torching the base sheet on apartment #2
looking down on #2 during base sheet install. looks like a mess, but is actually well organised the sun goes down on apartment#2's base sheet installed
starting off the screws early morning on Apt #2 Apt #2 horizontal completed, Apt #3 base being laid  
a view of the roof project from a helicopter starting at the south end to finish in the centre where the rolls are stored, Apt 7, half the base sheet laid
Apt 7 base laid and started on the granule cap Apt 7 cap sheet laid to the horizontal and gutter laid to Apt 6
Apt 6, heating and scraping off the granules on the old roof in preperation for an overnight seal double trouble, laying the last sheet for the day with a double selvedge edge, the sheet prepared by hand on site
Apt 6 tied in for the night, some material repositioned ready for the next day the shirts are off, it's getting close to summer
Apt 6 and 7 completed with the granule cap sheet to the horizontal some parts of the gutter upstands partition nibs cappings were bulging and hollow, we cut them open and reheat down tight
a prefered method of installing nib caps is in one metre pieces this way each metre length of flap can be torched evenly and then pressed down tight onto the gutter upstand, avoiding bubbles or hollow areas at the 90 degree bend
laying the base sheet on the left, and the green mineral cap sheet on the righ, apts 6 and 5 all the horizontal is done apts 1 through 7
the membrane on the parapets and walls uis so loose it comes off easy installing new green mineral cap sheet to the parapets
on removal of the old membrane from the top of the lightwell parapets we find polystyrene which does not like flames or heat installing a self adhesive base sheet over the top of the lightwell parapets so that we can lay the torchon over the polystyrene cladding top edge
heating and scraping the granules for a lap at the base of the parapets 150mm wide the green mineral cap sheet being laid over the self adhesive base sheet, on the lightwell parapets
one lightwell parapet completed lightwell completed and some higher parapet wall done, sky satelite dish reinstalled, metal parapet capping to come yet
using clamps to hold the membrane in place under the polystyrene plaster coping another lightwell parapet being covered
rolling the membrane up the wall at the back 850mm high completed lightwell corner and parapet wall
making a collar around a pipe typical skylight, the base has been cleaned of mineral chip ready for the new membrane lap
flashings removed pulling off the old membrane
a strip of self adhesive membrane is torched onto the back of the membrane. This is to avoid burning the rubber seal of the skylight with the torch removing the backing from the self adhesive strip
tucking the piece with the self adhesive under the rubber sealing flashing of the skylight one stuck on, the lower flap is torched as usual
torching the back end on skylight membrane work done
skylight finished, with flashings back on fitting the aluminium brackets and the metal cap flashings to the parapet walls
fixing the metal cap flashing to the top of the rear wall rear wall capped
just a few piope collars to go the old rubber boot is removed and the hole around the pipe is being filled with hot bitumen off the back of the torch sheet
the pieces for the collar torching the collar to the pipe
torching the flaps to the field sheet removing the granules for the target ring
torching the target ring to the field sheet installing a breather vent to each section of roof
fitting the cap to the breather vent stage 1 completed
stage 2 loaded for re roofing base layer being laid to Apt 10
green mineral cap laid to Apt 10 torchwork completed to Units 8, 9 &10
brackets and cap flashings being fitted to parapets timber top plate being fitted to rear parapet
metal cap flashing fitted to rear wall back of rear wall with metal cap flashing fitted
work completed, looking back from Unit 10 work completed to 8, 9 & 10 block