Established in 2007, offering more choice and unrivalled value
FREE DELIVERY to most of the UK
Trade Customer? Ask about a Credit Account
BUY IN BULK AND SAVE on a wide range of products

AT Airtight Loft Hatch 640 x 560mm Hinged - Patented Design

Code: AT
  • £51.96 (ex. VAT)
Item in Stock | Free Next Working Day Delivery (Mon-Fri)
Want it by Thursday 26th May? Order within 17 hours, 25 minutes and choose FREE Delivery to most of UK (Mon-Fri) at checkout.
£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 best performing airtight loft hatch available
The AT35 metal loft hatch is the first air tight loft hatch of its kind. Insulated to meet Part L of the building regulations the AT35 is airtight in both positive and negative air pressures at 50Pa. This hatch is designed specifically to meet the stringent demands new properties are subjected to ensure they are as airtight and well insulated as possible. The air permeability test is based on BS EN 1026:2000 and BS EN 12207:2000 for a ceiling use only.

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.


This steel loft trap protrudes just 2mm from the ceiling when fitted. You'll also notice its lovely clean lines and smooth finish (Powder-coated in white) it's the neatest loft hatch on the market.  Let's face it does anybody really want a great unsightly lump of plastic protruding from their ceiling?

Insulation - 65mm foam insulation bonded to the inside of the lid (AT25 and AT35) 100mm PIR (AT15)

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


  • Airtight at 600Pa air pressure (Positive and negative)
  • Easy to fit and easy to open with hinge down movement
  • Patented granted
  • Neatest loft hatch on the market, protrudes just 2mm from ceiling when fitted
  • Fits a structural opening of 645 x 560mm
  • Clear opening when fitted 530 x 520mm (Meets NHBC guidelines)
  • Fabricated from steel, finished in white Powder coat (RAL 9010)
  • Made from 80% recycled steel. GWP and ODP ratings of zero
  • 2 XPS insulation options giving U values of 0.35 (60mm - Blue) and 0.25 (100mm - Blue)
  • PIR Foam (100mm) insulation to give U Value of 0.15

Product dimensions
Fits a ceiling opening of 640x560mm
Clear opening once installed 538x520mm
Frame around lid: 25mm (all sides)
Depth AT35: 60mm AT25/ AT15: 100mm
Protrudes just 2mm from ceiling when fitted
Hinged on the 560mm side

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
AT35, 25 and 15 Technical Drawing

Write a review ›
Showing 2 of our total 61 reviews, with an average rating of 5 stars. Read all 61 reviews for Airtight Loft Hatch 640 x 560mm Hinged - Patented Design.
Review Summary - 5 out of 5 based on 61 ratings.
April 28, 2022 | Martin S

I am very pleased with my purchase, this loft hatch is superbly made and very well insulated. However, there is one small improvement needed which would make this absolutely perfect and that is……. the holes in the frame for the fixing screws need to be slightly counter sunk into the frame! Currently, even using screws with the very smallest heads, because the loft hatch is so precisely made the screws can foul the edge of the hatch. I managed to overcome this problem because I had a slight gap all around which enabled me to fix the hatch to the ceiling roof trusses with ‘Insta stick’ foam adhesive, the hatch and frame supported in place for a couple of hours and it is now as solid as a rock and every bit as good as screws if not better. I also managed to fit this myself with a little improvisation so it’s not necessarily a two person job you just need a little bit of thought as to how you will support the frame whilst adjusting it to fit. Four small battens of wood fitted to the ceiling just outside the edge of the frame that you twist to temporarily support the frame with the door open so that you can adjust and pack out if necessary. Overall I am very pleased with this product and would definitely purchase again.

Jupiter Blue Ltd
April 27, 2022 | Julie Williams
Super Loft Hatch

A super product ! Delivered promptly and was just what was needed. Thank you could not recommend more.

Jupiter Blue Ltd

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

You can return a standard product (most access panels and loft hatches) within 14 days of receipt. Roof domes, Roof Lights, 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.