Industrial Waterproof Systems Ltd
Page 1
Roofsaver Restoration System
1
General
The following is prepared in standard CSC three-part Section format. It should be included
in Division 7- Thermal and Moisture Protection under its own section.
1.1
Summary
This Specification is for a system consisting of the following;
1. Preparation of existing roof assembly
2. Fully reinforced RS Base to nominal thickness of 5mm
3. RS Wearing Course & RS Heat Shield
or RS Granular Cap
Spec Note: Contact IWS prior to issuing the following Specification. System requirements may vary according to site
conditions.
1.2
Related Sections
1.
2.
3.
4.
5.
6.
7.
1.3
Submit shop drawings in accordance with Section [
].
Submittals
.1
1.6
CGSB-37.50-M89, Hot-Applied Rubberized Asphalt for Roofing and Waterproofing.
CGSB-37.9M; Asphalt Primer for Roofing and Waterproofing.
CGSB-51.20M; Thermal Insulation, Extruded Polystyrene.
Shop Drawings
.1
1.5
] – Steel Decking
] – Rough Carpentry
] - Sheet metal flashing and counterflashing
] - Prefabricated roof specialties
] - Caulking and sealants
] - Plumbing specialties
] - Roof hatches
References
.1
.2
.3
1.4
Section [
Section [
Section [
Section [
Section [
Section [
Section [
Submit with the tender form a letter from Industrial Waterproof Systems Ltd stating
that the contractor has a minimum of 5 years experience installing RS Base
membrane and is qualified to perform Warranty work.
Delivery, Storage And Handling
.1
All material must be delivered to the jobsite in its original packaging. The
manufacturers name, product name, production/batch code, and handling
instructions must be easily identifiable.
.2
Store materials in manufacturers packaging until used on site. Additional protection
from the elements may be required to ensure materials remain clean and dry until
ready to install.
Industrial Waterproof Systems Ltd
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Roofsaver Restoration System
.3
1.7
1.8
Any materials damaged during delivery must be replaced prior to commencement of
work.
Site Conditions
.1
Ensure all surfaces to receive the membrane are clean, dry and free of frost.
.2
Do not apply RS Base when the ambient temperature is below -18°C. .
.3
Ensure the service temperature of the products falls within acceptable limits as
detailed on the product data sheets. Notify Industrial Waterproof Systems Ltd of
any potential risks prior to commencement of work.
.4
Ensure the components of the system will not be exposed to any chemicals to which
they are not resistant as detailed on the Technical Data Sheets. Care must be
taken to ensure that primer, oil, gas, etc., are not spilled on the system.
.5
Protect RS Base from construction traffic during installation. Light foot traffic is
acceptable after the protection/separation course is installed. Inspect the system
for damage prior to installing the thermal insulation.
Warranty
.1
Upon completion of work, supply the Owner with a manufacturers 10-year
Watertight Warranty providing coverage against any actual leakage caused by
either material defects or faulty workmanship.
2
Products
2.1
MEMBRANE MANUFACTURER: Industrial Waterproof Systems Ltd
2727 58th Ave Southeast
Calgary, AB
T2C-0B4
2.2
Materials
.1
Primer: Asphalt cutback primer meeting CGSB 37-GP-9M.
.2
Hot Rubberized Asphalt: RS Base as manufactured by Industrial Waterproof
Systems Ltd meeting CGSB 37.50-M89.
.3
Reinforcing Fabric: RS Reinforcing Fabric; a polyester fabric reinforcing sheet
designed for use with Hot Rubberized Asphalt Systems.
.4
Wearing Course: RS Wearing Course; an SBS modified, 95 g/m² fiberglass
reinforced membrane with sanded surfaces on top and bottom.
.5
RS Heat Shield: A White acrylic coating having a minimum solar reflectivity of 0.77
and a minimum Albedo of 0.89.
Industrial Waterproof Systems Ltd
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Roofsaver Restoration System
.6
Granular Cap Sheet: RS Granular Cap; an SBS modified, 95 g/m² fiberglass
reinforced sheet with sanded surfaces on bottom and ceramic granules on top.
3
Execution
3.1
Preparation of existing 4-Ply BUR assembly
3.2
.1
Remove existing gravel down to bare felts.
.2
Remove areas of wet insulation and replace with new insulation to match thickness.
.3
Ensure the prepared substrate is clean, dry and free from frost. Thoroughly clean
any spills which occurred during the preparation work (gas, oil, etc.).
Membrane Application
.1
.2
Heating of RS Base
.1
RS Base must be heated in a double jacketed, indirectly fired melter using a
high flash point heat transfer oil. The melter shall be equipped with a
mechanically operated agitator and thermometers to register both membrane
and oil temperatures.
.2
Heat membrane in melter until it reaches between 190°C and 204°C. The
temperature in the melter and during application shall not exceed 205ºC
(400ºF).
Detail work
.1
.3
Perform detail work prior to installing membrane in the field. Follow Industrial
Waterproof Systems Ltd’s guidelines and details. Contact Industrial
Waterproof Systems Ltd where treatment of expansion joint(s) is necessary.
Field Application (Fully Reinforced)
.1
Apply a monolithic base coat of RS Base at a rate of 2-3mm. Using a heavy
squeegee, work the membrane in to the prepared substrate to ensure it is
fully bonded and free of voids and thin spots.
.2
While the membrane is still hot, embed the RS Reinforcing Fabric. Overlap
the sides ¼”.
.3
Apply a second monolithic coat of RS Base at a rate of 2.5-3mm. Ensure the
membrane is worked in to the overlap in the reinforcing sheet. The fully
reinforced membrane must be a minimum of 5mm total thickness.
Spec Note: For a white reflective finish to maximize energy savings follow 3.3 to 3.4.Where energy savings are not of
concern, RS Granular Cap may be used in place of RS Wearing Course and RS Heat Shield. For a granular finish
omit steps 3.3 and 3.4 and specify step 3.5.
Industrial Waterproof Systems Ltd
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Roofsaver Restoration System
3.3
3.4
3.5
RS Wearing Course
.1
While the membrane is still hot, embed the RS Wearing Course. Overlap the sides
and ends of the rolls a minimum of 3”. Bleed out of membrane beyond the lap
should be minimized.
.2
Seal out to edge of lap using additional RS Base membrane.
RS Heat Shield
.1
Ensure the surface of the RS Wearing Course is clean and dry.
.2
Apply RS Heat Shield to the substrate in two even coats by spray or roller allowing
drying time between coats. Drying time will vary from 20 minutes to 2 hours
depending on ambient conditions.
.3
Do not apply RS Heat Shield when temperatures are below 5°C.
Granular Cap
.1
3.4
While the membrane is still hot, embed the RS Granular Cap. Overlap the sides
and ends of the rolls a minimum of 3”. Where bleed out of the RS Base membrane
has occurred beyond the edge of the cap sheet, loose granules can be embedded
in to the hot membrane if required for esthetics.
Final Inspection
.1
Notify Industrial Waterproof Systems Ltd when installation of the system is complete
to arrange a final inspection of the installation. Any deficiencies must be corrected
prior to issuance of the Warranty.