Hatch Access Roof Domes

The hatch access roof domes feature the following specification:

1. Triple glazed clear polycarbonate sheeting. This gives:

   1. Great visibility and light transmission.

   2. Great insulation (U value) to comply with Part L Building regulations.

   3. Security and impact resistance.

   4. Fire retardant (British BS476 and European fire classification Class B-s1, d0 to BS EN 13501 Part 1.)
       

2. Structural insulated tapered PVC upstand which gives it strength, heat retention and makes installation easier.
    

3. Lockable internal handles to allow the opening of the hatch dome from the inside, and to securely lock it to from others getting in.
    

4. Hinged lid with gas ram supports

   1. This lid will open at 90 degrees for easy access, and neatness.

   2. The gas rams allow for a more controlled opening and shutting.

   3. The gas rams prop the lid open stopping the wind from blowing it shut / around.
       

5. Trickle vents.

   1. Allow ventilation without the lid open, for example it might be raining.

   2. Help to maintain a comfortable indoor environment.

   3. To help prevent condensation.

   4. To help stop could growth attributed to condensation.

   5. The vents meet BS EN 13141 Part 1 2004 for air flow, air leakage and weather tightness.
       

6. Fully Weathertight, the access hatch domes comply to the requirements of BS EN 1873:2005 ensuring reliable all weather performance
    

7. Fully BBA accredited – Certificate No 06/4385.