Summary
Free 2 to 3 working days delivery to mainland UK.
Ian Smith
“Simple online order process, given a little discount is an added bonus. Delivered the next day. Simple as and there will be more orders placed”.
GL250-50mm 562 x 726mm Manthorpe loft hatch for new build
Free 2 to 3 working days delivery to mainland UK.
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Additional Shipping Charges
- Free delivery to mainland UK*
- Fire-rated & metal panel specialists
- Bulk discounts available*
Description
562 x 726mm Manthorpe loft hatch for new build
Product Reference: GL250-50mm
The Manthorpe GL250 is an insulated, drop down loft access door for new build homes. Its multi-point catch keeps a draught seal around the whole opening, which helps meet the air leakage requirements of Part L of the Building Regulations and stops moist warm air getting into the roof space, where it can cause condensation and heat loss.
The hatch is compatible with GLL256 and GLL257 loft ladders.
Loft Hatches Specifications
Loft Hatch Specification
| Insulated Loft Hatch Specification | |
|---|---|
| Colour: | White |
| Packing details: | Individually packed in a polythene bag and boxed |
| Box weight: | 4.85kg |
| Material: | High impact polystyrene |
| Manufacturing process: | Injection moulded |
| Draught seals: | Expanded polyurethane |
| Insulation | 50mm Expanded Polystyrene |
Features
- Door and frame are fully draught sealed.
- Seals supported by 12 perimeter catches.
- Sliding door catch operated from a single point.
- All hinge, catch and fixing geometry is located outside of the seal, providing no air leakage paths.
- Hinge detail hidden when door is locked.
- Hinge pivot is positioned to maximise opening.
- The hinge design makes the door fully removable in seconds.
- Hinge blockers prevent unwanted door removal.
- Fully insulated door panel.
- Screws fix up into timbers, for fast and simple installation and optimum pressure on the frame seal.
Air Leakage
The draught seals have been independently tested by the BRE in accordance with BS EN 13141-1:2004 (test report no. 283-506). The door exceeds the requirements for a “Well Sealed Ceiling” in BS 5250, with an air leakage rate below 1m³/h at a pressure differential of 2 Pa. It also meets the Building Regulations Part L reasonable limit for design air permeability of less than 10m³/h.m² at 50Pa.
Environmental
The expanded polystyrene insulation on the back of the door has a Global Warming Potential (GWP) of less than 5, is CFC/HCFC-free and has an Ozone Depletion Potential (ODP) of zero.
Measuring Guide
How to measure
Measure the structural opening width and height in millimetres and check it against the fitting sizes below.
| Length | Width | |
|---|---|---|
| Fitting size (opening in the ceiling) | 726mm | 553mm (min) to 562mm (max) |
| Overall size | 856mm | 686mm |
| Clear opening | 715mm | 545mm |