Page 1 - 1 - Synroof HB Technical Catalogue_Neat

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SYNROOF HI BUILD

Premium Quality Acrylic Waterproof Coating

PRIMING
1. Old asphalt surfaces and bituminous
GENERAL roofing felt. Cut felt blisters crosswise, dry
1. BITUMAT SYNROOF Hl-BUlLD, an and rebond with suitable adhesive. Allow to
cure. Then orime cleaned surface with
elastomeric, premium quality acrylic coating,
BITUMAT SYNROOF Hl-BUILD diluted with
may be applied by brush, roller, squeegee or
50% water.
spray equipment depending on site conditions.
2. Concrete Terrazo tile roofs. Following
To spray, select a nozzle size of at least 0.028
removal of all loose and other alien material,
in.; first checking the spray equipment to ensure
prime with BITUMAT SYNROOF Hl-BUILD
suitability.
diluted with 50% water. Greater dilution
2. All surfaces to be coated must be clean, dry, may lead to weaker bonding with the
free from dust, dirt, oil and other contaminants. substrate.
3. Coverage varies depending on factors such as 3. Metal roofs. Clean and remove all rust and
type and quality of substrates i.e. surface apply a rust inhibitive primer. Follow this by
regularity and application method. applying metal primer to all corroded
surfaces.
4. Apply in separate coats, each at a right angle to
4. Other roofs. Should the roof be affected by
the one before.
algae or fungal growth, use a stiff bristled
5. The final coating thickness to be achieved broom to remove this before treating the
depends on the requirements of the individual cleaned surface with a suitable fungicide,
roof. and apply primer coat by diluting BITUMAT
SYNROOF H l-BU I LD with 50% water.
PREPARATION
APPLICATION
Surface preparation is a very vital issue and this
influences the integrity of the waterproofing system. 1. Primer must be completely dry before the
first coat is applied.
Hence, care must be exercised when the
2 BITUMAT SYNROOF HI-BUILD may be
preparation is done. This is very important when re-
applied by soft brush, roller or spray gun.
roofing over an existing old roof.
3 For spraying, BITUMAT SYNROOF Hl-
BUILD may be slightly diluted with water.
Instructions should be followed strictlv. Too great a dilution may lead to
sedimentation and blocking of spray gun.
1. All surfaces to be smooth, clean, dry and free 4 Apply two coats, each at the approximate
from dust, rust and latience. rate 0.35 kgisqm. (Excluding the
SYNROOF prime coat) after diluting with
2 Concrete and cementitious substrates must be
25o/owater.
well compacted with a wood float type finish, be
5. Where substantial movement is anticioated
at least 28 days old and well dried. Uncured in the substructure, a reinforcement (60/80
concrete surface will have moisture trapped gsm thermobonded polyester) as part of a
inside and willturn gaseous when temperature "sandwich" membrane system is used. Lay
rises. This will lead to blistering and even this reinforcement in the wet first coat
delamination from the surface. before application of subsequent coats. All
3 Wooden or metal panels to be firmly fixed in detailing to pipes, upstands, drains,
position. projected line etc. should be reinforced in
this way.
Terrazo roof tiles: Clean and repair damaged
joints. Ensure that the tiles are firmly grouted.
CURING
Remove all loose material.
Allow 24 hours between coats. A final curing
Metal Roofs: Wire brush to remove moss,
time of 48 hours is adequate at normal working
mildew, loose paint, and rust areas, then clean
temperatures. Ensure curing is complete before
surfaces with a broom before priming. High laying thermal insulation boards, mechanical
pressure water brooming may be used, if
protection and othercoverings if required.
necessary.
Low temperatures and high atmospheric
humidity will slow down the curing rate, and vice
'V
versa.

SYNROOF HI-BUILD
REINFORCEMENT tnroruc rHE pARApErs & rF NEEDED tN oLD