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AT Air Tested Loft Hatch 560 x 640mm Hinged

  • £51.96 (ex. VAT)
Item in Stock   |   Free Next Working Day Delivery (Mon-Fri)
Want it by Tuesday 5th December? Order within 1 day, 17 hours, 5 minutes and choose FREE Delivery to most of UK (Mon-Fri) at checkout.
1+ 5+ 10+ 30+ 60+
£51.96 (ex. VAT) £49.35 (ex. VAT) £47.07 (ex. VAT) £44.19 (ex. VAT) £42.86 (ex. VAT)
FREE DELIVERY to most of UK See above for delivery estimate

The ultimate loft hatch range - patented design

Built to exceed the stringent air permeability testing for new homes. By combining the best draught proofing and insulation, no other loft hatch offers as much potential to reduce heat loss and save on heating as this range does. This slender, hinged loft hatch has very clean lines and is offered with a choice of 3 levels of insulation. It's easy to fit, easy to use and looks incredibly neat.

Model Specifications

Model Insulation / depth U-Value Clear opening Nominal
Weight Supplied with
AT35  XPS / 60mm  0.35 W/m²K 520 x

560 x 640mm

approx. + 5mm
over this size
when creating your structural opening)

605 x

 Opening key, fixing screws
/ plastic o-rings
to seal between screw head
and fixing hole

AT25  XPS / 100mm  0.25 W/m²K 520 x
AT15  PIR / 100mm  0.15 W/m²K 520 x

Insulation values explained
Expressed as U-Values which measures the amount of heat loss through a given material. To comply with Part L of the Building Regulations a loft hatch needs to achieve a U-Value of 0.35 W/m²K. Note because this is a measure of heat loss, the lower the U-Value, the better the performance.

Construction / Finish

Frame, Lid, Lock and cam: Steel
Finish: Powder-coated white (RAL9016) - Maintenance free, easy to clean, ready painted.

Lock options:

Standard: Twist lock with a tri-drive lock body (Comes with opening key - Pole also available as separate item)
Optional: Key lock available (Key supplied) Please note pole not suitable for use with this option
Unlocking: Press upwards, against the lock and twist to open


Easy to fit Fitting is a doddle, just screw fix through the pre-drilled holes in the frame into the surrounding joists. The spring loaded twist catch lock ensures a high compression seal between the door and the frame. The outer frame is also fitted with a seal to ensure air cannot easily escape from around the outer edge of the hatch. No additional sealant is required. Comes with fixing screws and plastic o-ring seals which maintain the air seal between the hatch and the fixings.

Air Permeability Testing

Independent testing carried out in accordance with BS EN 1026:2000 and BS EN 12207:2000 for ceiling use only.
This requires testing to be carried out at a pressure of 50 Pascals (Pa). We opted for testing at higher pressures to demonstrate the quality of the product.

Pressure Differential Pa Air Permeability Rate Infiltration & Exfiltration Tests(m³/hr/m²)
Test No.1 Test No.2 Average
50 0.46 0.23 0.34
100 0.46 0.96 0.57
150 0.92 0.92 0.92
200 1.61 1.84 1.72
250 1.61 1.61 1.61
300 1.15 1.84 1.49
450 2.76 1.84 2.30
600 13.32 1.38 7.35

Loft ladder compatibility

The AT Range of loft hatches is compatible with our entire range of residential loft ladders (AL2, AL3, AL3C). For more information on our loft ladders click here

AT35, 25 and 15 Technical Drawing
Dimensions AT loft hatch range models

UK Delivery Zones

The lead times and delivery service are displayed against each product, just below the price.
We will continue to send items on a Next working day delivery, but please accept delivery might take longer, this is out of our control.

Please note, for certain products and delivery zones we can offer AM deliveries and Saturday Deliveries, if available, you'll be able to select and pay for these options via the checkout.

Delivery Charges will be applied for deliveries to geographical  areas represented as Zones C and D:
This includes certain parts of Scotland, Scottish Islands, Northern Ireland, Channel Islands and IOM)

We only supply to Trade Account Customers in Zone E

Cancellations:- Any stock item which is cancelled after having been dispatched, but before you have received it will be subject to a minimum fee of £25.00 + VAT for parcels and a minimum of £70 + VAT for pallets. Bespoke (made to measure) orders cannot be cancelled once ordered.

You can return a standard product (most access panels, loft hatches, accessories and Steel / Aluminium Roof Hatches) within 14 days of receipt. Roof domes, Roof Lights, Glazed Roof Hatches and AOV Smoke Vents will be subject to a collection restocking fee.
Please note Made to measure products cannot be returned.
Click here to download a return form.