waterproof roof membrane

Category: APP Modified Bitumen Waterproof Membrane    Description: DY-APP Modified Bitumen Waterproof Membrane materials using  polyester reinforcement for waterproofing,it's made from  polyester felt as its reinforcement featuring high strength,elongation and corrision resistance, APP,APAO as its modifier for meeting the torched-on applications, it shall be covered with polyethylene membrane(PE),aluminium foil, colorful sand or mineral granule on its top face and polyethylene membrane(PE)coated on its under face. This series of membrane is designed for the waterproofing of underground construction such as tunnel, subway, basement ,roofs and pools etc.            1.APP Membrane installation procedure: 1.Base processing:the base surface must be clean,solid,level,dry;no grit,rift and loosing dust. For a large recess,fill it with cement mortar and then level it. Remove the protrusion and clean dust.If working on base slab or lateral face,water lowering should be done.     2. Painting primer:before laying the membrane,clean the dust on the surface of concrete base with dust catcher or dust-blower;then paint entirely with treatment agent of DY primer for waterproofing(for purpose of dust consolidation and high adhesive effect).   3.Heat to melt: place membrane correctly, fire torch, heat the membrane with base entirely, when the surface of the membrane is black and bright with a fusion layer, apply the membrane and press it into a solid and flat state.Before the membrane is cool, seal the edge of joint by float.   4.Requirements for lapping: There should be less than 3 layers of lapping, with the joint seams appearing as"T" type,avoid 4 layers of lapping.The width of longitudinal lapping is between 50 and 80mm,and of end-lap joint 100mm     2. Package and transportation: 1.  Membranes should be stored under dry and ventilated conditions. 2.  Different types of membranes must be piled separately. 3.  Under usual condition, storage period is one year since production date. 4.  Membrane roll should be put vertically during transportation. It should be kept away from sunshine and rainwater.   3. Requirements for surroundings: 1.The base should be dry and clean. Do not work in the rainy or snowy day. 2.Do not work under heavy wind(above 5 grade) 3.Unsuitable for construction below 0°C 4.If it is rain or snow in the process of construction, protective measure to the laid membrane is must.   4. Technical property:

APP Waterproof Membarne       Reinforced base		PY		G
Type		I	II	I	II
Content of soluble substances(g/m2)≥	2mm			1300
	3mm	2100
	4mm	2900
Water impermeability	Pressure (Map)	0.3		0.2	0.3
	Retention time (min)	Impermeability within 30 min
Heat resistance °C		110	130	110	130
Tensile strengthN/50mm≥	Longitudinal	450	800	350	500
	Transverse			250	500
Elongation at break %≥	Longitudinal	25%	40%	-------	-------
	Transverse
Tear strength  N≥	Longitudinal	250	350	250	350
	Transverse			170	200
Low temperature flexibility°C		3	-10	3	-10

   

Description	Width	Length	Thickness	Weight
modified bituminous sheet materials(SBS/APP)  with PE film(PE)	1m	10m	2mm	32kg/roll
	1m	10m	3mm	45kg/roll
	1m	8m	4mm	48kg/roll
modified bituminous sheet materials(SBS/APP) with mineral granule (M) or sand(S)	1m	10m	3mm	45kg/roll
	1m	8m	4mm	48kg/roll
modified bituminous sheet materials(SBS/APP) with aluminum film(Al)	1m	10m	2mm	32kg/roll
	1m	10m	3mm	44kg/roll
	1m	8m	4mm	47kg/roll
Self-adhering polymer modified bituminous waterproof sheet	1m	20m	1.2mm	42kg/roll
	1m	20m	1.5mm	46kg/roll
	1m	15m	2.0mm	44kg/roll
	1m	10m	3.0mm	45kg/roll
	1m	8m	4.0mm	48kg/roll