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INSULATION CERTIFICATE
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City of Maple Ridge Revised 2017-06-26
11995 Haney Place, Maple Ridge, BC V2X 6A9 Tel: 604-467-7311 Fax: 604-467-7461
Inspection Requests: inspectionrequests@mapleridge.ca Enquiries only at: buildingenquiries@mapleridge.ca
PLEASE SUBMIT TO BUILDING DEPARTMENT PRIOR TO INSULATION INSPECTION
To: The Building Inspector Building Permit No.
City of Maple Ridge
Re: Address of project____________________________________________________
R VALUE OF INSTALLED INSULATION (7) (See NOTES on reverse side)
for All Buildings of Residential Occupancy
BUILDING ASSEMBLY
Minimum
R Value
Installed
R Value
Product
Used(6)
Attic or Roof Spaces 40(1)
Roof Assemblies without Attic Space (Cathedral Ceilings/Flat Roofs) 28(8)
Frame Walls (including frame crawl space walls) 20(2)
Suspended Floors - Framed
- Concrete Slabs
28
12
Foundation (Finished Basement)
(Crawl Space Walls insulation to 600 mm below grade) 12(3)(
12
Unheated Concrete Slabs on Ground, at or Above Grade
(insulation around edge of slab and 500 mm
vertical or horizontal from bottom edge of slab)
10(3)(4)
Radiant Heating Slabs on Ground
(insulation under all slab area and around edge of slab)
12(3)(4)
Radiant Heating Suspended Floor Assembly Over Heated Area
(insulation between heated floor and heated area below)
12(5)
Underground Heating Ducts 12(4)
6 Mil U.V. Protected Vapour Barrier Required and Installed Yes
Rigid Insulation installed behind waterlines at exterior walls Yes
Certified this day of , 20_______.
INSULATION CONTRACTOR OWNER/BUILDER
Business Licence No.: Business Licence No.:
Company: Company:
Address: Address:
Principal (print): Owner (Print):
Phone No.: Phone No.:
Signature: Signature:
(this form is to be completed by both the owner/builder and the insulation contractor for it to be acceptable)
INSULATION CERTIFICATE
Page 2 of 2
City of Maple Ridge Revised 2017-06-26
11995 Haney Place, Maple Ridge, BC V2X 6A9 Tel: 604-467-7311 Fax: 604-467-7461
Inspection Requests: inspectionrequests@mapleridge.ca Enquiries only at: buildingenquiries@mapleridge.ca
NOTES:
(1) Insulation shall be installed so that there is a reasonably uniform insulation value over the entire
face of the insulated area.
(2) Stud / Frame type of wall construction.
(3) The top edge of insulation between the slab edge and foundation wall may be protected with a
pressure treated preserved wood filler strip not more than 50 mm thick (typically 2" x 3" on edge
above the insulation).
(4) Rigid insulation in contact with the ground must be approved for such use.
(5) Not applicable when heating elements or piping is located within a concrete topping on a
suspended floor assembly or within an internally heated suspended slab.
(6) Specify manufacturer and product name, e.g. Dow, SM.
(7) These requirements may be modified where computer modeling or engineering principles are
used to show that the heat loss of the building will not exceed that which would result from the
use of the R Values in this table.
(8) Where walls are constructed with a minimum R20 insulation, data confirms that R28 insulated
attic and roof spaces maintain an optimum resistance to heat loss, therefore, R20 walls with
R28 attic and roof space insulation is an acceptable equivalent.
(9) Wall insulation must be installed within a dry wall cavity. Insulation is not to be placed within
wall cavities that have standing water on the bottom plates. Any wet or damp insulation is to be
removed from the wall cavities and replaced with new insulation.
(10) Where water lines are installed in exterior walls, insulation shall be installed on the exterior (cold)
side of the pipe.