Specification & BOQ for “WALL INSULATION SYSTEM”
with “INSUBOARD” – Extruded Polystyrene Board

SCOPE:

This specification covers wall insulation system using the “Insuboard” extruded polystyrene thermal insulation boards.

General:

1. The area where cavity insulation system needs to be installed shall be made free from all other activities that could disrupt the installation of the system.
2. All the products specified in this document shall be installed strictly in accordance with the manufacturer’s written instructions and by a specialist applicator approved by the manufacturer.
3. “INSUBOARD” to be used in the system shall be manufactured by SUPREME PETROCHEM LTD shall meet the key performance properties listed below against each.
4. The applicator shall ensure that the product in the system are received in good condition without damage and stored as per manufacturer’s instructions.

Key properties of the specified products:

​Property	Standard	​Unit	Value
Density	DIN 53420 ASTM D 1622	​Kg/m3	34-36 2.12-2.25
​Thermal Conductivity at Mean Temperature (23.9 Deg C) 90 day	​DIN 52612 DIN 52616 ASTM C 177-97 or ASTM C 518-98	W/m-K Btu.in/sqft.hr.deg.F	0.028-0.029 0.20
​Compressive strength	DIN 53421 ASTM D 1621-95	​kPa psi	>300 >43
Water Absorption by submersion (28 days)	​DIN 53428 ASTM D 2842	​% by Volume	0.2 <1
Fire Classification - ​Flammability	​DIN 4102 Part 1	Class	B2 -Difficult to ignite comply

CAVITY WALL INSULATION:

Providing and fixing wall insulation treatment with 50 mm thick Insuboard (XPS) Extruded Polystyrene Board, having thermal conductivity of 0.028 W/m.K, density 34-36 Kg/mtr.cub, compressive strength of > 300 kPa, water absorption of 0.2 % by volume,   B2 grade fire compliance, in the size of 600mm width x 1250 mm Length x 50 mm thick: square edge / shiplap  boards fixed in brick pattern: staggered joints with the help of mechanical fasteners & No More Nail adhesive of Bostik. After fixing Insuboard, leaving an air gap of 25 mm and building second brick wall final finishing as directed by the Engineer In Charge as per the details below.

APPLICATION METHODOLOGY

• Supplying & application of 50 mm thick Insuboard (XPS), Extruded Polystyrene Board, 34-36 kg/m3 density, > 300 kpa compressive strength & thermal conductivity 0.028 w/m.k, of size 600 mm x 1.25 mtr.
• Insuboard is to be installed on internal  side of external wall with the help of screws/ fasteners on all the four corners. One screw / fastener at each corner.​
• After that leaving an air gap of 25mm, building another brick wall, as final finish.

Budgetary Quotes :

​No.	Description	Unit	Rate	Qty	Amount
1	WALL INSULATION	​	​	​	​
1.1	Supply and laying of insulation Boards of 50 mm thick Insuboard XPS Extruded Polystyrene Board, having thermal conductivity 0.028 w/mK, density of 34-36 kg/m3 and compressive strength of > 300 kpa with the help of fasteners / Self Drilling screws of 75mm in length (minimum 4 Screws each board, 1 at each corner).	SQM	0.00	0.00	0.00
1.2	After leaving an air gap of 25 mm another brick wall to be made as final finished.	​SQM	​0.00	​0.00	​0.00

Above rates are indicative and on per sqm basis only.
Taxes, Freight & Overlaps/Wastages will be extra.

MATERIAL - GENERAL DESCRIPTION:

Extruded Polystyrene boards to be manufactured from General Purpose polystyrene granules though an automated extrusion process free of CFC blowing agents : preferably with a blend of co2 & ethanol : low Global warming index : the boards are 100 % closed cell structure with a unique properties of high compressive strength & a stable thermal conductivity properties over the life cycle of building etc.

APPROVED SYSTEM:

The boards of size 600mm width x 1250 mm length & 50 mm thickness with square edge to be laid in brick patterns with the help of suitable bituminous vapour barrier or No more nail adhesive & mechanical fasteners of appropriate length as per the instructions of Engineer in charge complete in all respects etc.

FINISH (OPTIONAL):

Insuboard to be finished with another brick / AC Blocks wall after leaving a gap of 25 mm, as per the instruction of the engineer in charge.

THERMAL PERFORMANCE:

The extruded polystyrene under deck insulation system improves the thermal efficiency of the building by reducing the U value as per the prescribed norms in the ECBC codes depending on the type of building  in terms of hours of operations & geographical location. The thermal performance is very stable through out  the life cycle of the building. It improves the thermal comfort & also helps in optimising the loads thereby reducing the capex & operating cost of HVAC systems.

​FIRE PERFORMANCE:

XPS boards must be fully tested in accordance with DIN 4102 part 1 with regard to fire properties, flame spread , & surface burning characteristics . Also suitable Fire stops , sleeves, PU sealant, Rockwool sleeves etc wherever there are electrical cut outs & opening. The boards must be of self extinguishing characteristic etc.

QUALITY ASSURANCE:

The suspended ceiling system is to be manufactured within a recognized quality management system as per ISO 4898 & ASTM C 576 requirements. Each batch should also have the Raw material GPPS test certificates .