UNIFOLD Gutter Lining System - Gutter Lining Components Specification Listing

Gutter Components Specification Listing - Back To Top

To customise and complete the model specification please select the items as required from the
following components list

SUMPS: Factory fabricated and sealed and supplied as part of a section of Unifold gutter. Install fully in accordance with manufacturers instructions.

SIDE BOXES: Factory fabricated and sealed and supplied as part of a section of Unifold gutter. Install fully in accordance with manufacturers instructions.

SECTION CHANGE: factory fabricated and sealed to include a small section of each gutter. Install fully in accordance with manufacturers instructions

EXPANSION / CONTRACTION JOINT: Manufactured as an integral part of a Unifold section to be installed between two fixed points i.e.:- two outlets / one outlet and at the stop-end / corner or junction. To be fitted fully in accordance with manufacturers instructions. System drawing number 1024

SIPHONIC OUTLET SECTIONS: Manufactured as an integral part of a Unifold section. To be fitted fully in accordance with manufacturers instructions. System drawing number 1026

CORNERS: factory fabricated and sealed. To be fitted fully in accordance with manufacturers
instructions System drawing number 1027

TEES: Factory fabricated and sealed. To be fitted fully in accordance with manufacturers instructions. System drawing number 1028

PERMANENT TIE-OFF ASSEMBLY: Supplied in component kit form to permanently terminate Unifold within the length of the gutter i.e.:- at the party line of two buildings sharing the same gutter. Install fully in accordance with manufacturers instructions. System drawing number 1017

PVCU OVERFLOW UNITS 50mm DIAMETER x 300mm LONG: Supplied as a factory fabricated unit. Install fully in accordance with manufacturers instructions. System Drawing number 1035

SNORKEL OVERFLOW UNITS (For flashing existing overflows): Supplied as a factory manufactured unit. Install fully in accordance with manufacturers instructions. System drawing number 1025

SNORKEL OVERFLOW UNITS (For the insertion of new overflows): Supplied as factory fabricated unit. Install fully in accordance with manufacturers instruction.

System drawings may be obtained from Ampteam on request.

General Specification and Maintenance Instructions - Back To Top

GENERAL SPECIFICATION & MAINTENANCE INSTRUCTIONS

UNIFOLD gutter systems are manufactured from a composite sheet consisting of a synthetic rubber membrane fully bonded to a galvanised steel sheet using a high pressure bonding process.

The resulting bond is unaffected by the extremes of heat, cold or moisture normally experienced on roofs and buildings.

The lining and its metal substrate form a composite sheet giving optimum wet life performance with the strength, workability and handling qualities of steel.

UNIFOLD employs CARLISLE SYNTEC "SURESEAL" EPDM which is a fully cured, single ply synthetic roofing membrane made of ethylene, propylene, diene, terpolymer which is renowned for its very long term stability and life span in excess of 50 years. "Sureseal" EPDM membrane is covered by British Board of Agrément Certificate No 92/2791, copies of which are available on request.

TECHNICAL SPECIFICATION - MATERIALS & COMPONENTS

1. CARLISLE SYNTEC "SURESEAL" EPDM MEMBRANE
A Black ELASTOMERIC MEMBRANE with a good combination of high elasticity and tensile strength.

Temperature stability from -45 degree centigrade to + 130 degrees centigrade retaining elasticity at low temperatures and resistance to temperature shocks up to 250 degrees centigrade.

SURESEAL has excellent resistance to U.V radiation and ozone concentration base.

2. STEEL SUBSTRATE.
HD Galvanised mild steel to E.N.10142-1991– FE PO2G / BS 2989/1982 Z2/G275, 0.7mm thickness. To provide further protection for the galvanised steel substrate, it is provided, as a minimum specification, with a heat cured, high performance polyester topcoat over a corrosion resistant primer. UNIFOLD STANDARD COMPONENT LENGTH - 2800mm

3. SOLE BOARD (closed cell Insulation Board) Extruded Polystyrene "STYROFOAM" I.B board (or similar approved) minimum density 28kg/m3 and thermal conductivity value 0.033 w/mk. Insulation thickness to suit gutter bolt head/stud intrusion height and thermal requirements.

4. JOINTS: mechanical means utilising butt straps join Unifold gutter systems. There are two types of butt straps. Type 1 - fixed with A.D.68 Blind rivets. Used for normal installations Type 2 – Clip joint – Used for difficult access situations Both types are sealed with P40 polyurethane mastic which is permanently flexible. Mastic service temperature, - 40 degrees centigrade to + 80 degrees centigrade (dry) & + 50 degrees centigrade (wet). Following installation joints are further protected by an EPDM membrane strip, covering the whole joint and fixings which is cold vulcanised in position. Normal width of membrane strip is 150mm.

5. OUTLETS:

1) E.P.D.M Elastoform factory fabricated in a spigot format to suit specified down pipe sizes. Positioned through a cut hole into the Unifold gutter and spliced (cold vulcanised) into position in accordance with splicing instructions.

2) EPDM Sureseal Metal/Membrane factory fabricated in a spigot format to suit specified downpipe sizes. Used to replace corroded outlets or to provide new outlets. Also used as a security point each side of an expansion joint for Unifold. All outlets can be manufactured to suit any existing outlet type

6. FABRICATION: Items to complement the system such as Sumps, Side boxes, section changes are fabricated and sealed in the factory. These items are most often manufactured within a small section of Unifold to enable the simplest of operations to install.

7. HANDLING & PROTECTION: EPDM can easily withstand without damage, limited foot traffic and light concentration loads associated with installation and maintenance. All maintenance or repair crews should be advised that the gutters are EPDM membrane lined and that care should be exercised to prevent damage. Any possible damage should be reported immediately. Ampteam Ltd recommends that a log is kept of all roof top activity.

To avoid damage by sharp objects during roofing work programmes and particularly where the gutter is to be used as a walkway or work platform during these programmes then the gutter should first be cleaned in the prescribed manner, and then adequately protected by boards.

On work completion and removal of boards the gutter must be inspected for damage.

8. MAINTENANCE (Please see Unifold Care & Maintenance Guide available on request from Ampteam)

A) The roofs of all buildings should be inspected at regular intervals as part of a planned maintenance programme, particularly where the building is in or near a wooded area, subject to high winds, or there are industrial pollutants which may accumulate in the surface water run-off.

B) CLEANING

1. EPDM gutter should be fully swept out and cleaned by hosing down and swept with a soft broom.
2. Shovels or metal scrapers should never be pushed or pulled along the surface of the EPDM.

3. Following sweeping, the EPDM surface should be inspected for signs of surface damage particularly at joints or seams.

4. Remove, clean and replace all balloon gratings. Exercise care to prevent damage to EPDM membrane outlets.

C) DAMAGE REPAIR: EPDM can be repaired throughout its extensive life using the following procedure.

1. Clean around the damaged area.

2. When repairing membrane which has been in service for some time, it is necessary to remove accumulated dirt by first scrubbing the membrane with a brush and warm soapy water.

3. After rinsing with clean water and drying, a second cleaning is required using a splice primer to prepare and reactivate the membrane.

4. Cut a patch of membrane that extends minimum 80mm on each side of the boundaries of the damaged area.

5. Round all corners of the repair piece.

6. Install the splice fully in accordance with splicing procedures.

9. APPROVED CONTRACTORS: Our network of approved installation contractors are available to effect repairs, clean gutters and to inspect for damage should this service be required.