Flat Roof Access Ladders & Weather Proof Hatch

 

Flat roof access ladders with weather proof hatch available for supply only or supplied & fitted 

 

The roof hatch is combined with a loft ladder and hatch casings specific it your flat roof requirements, depending on the measurement from the ceiling below to the roof on top. The roof hatch is very easy to use with a good ergonomic handle and two strong gas springs on the inside of the hatch. For complete weather resistance the hatch is covered with a hot-galvanized steel .

Thanks to the light gradient on the lid there is no water accumulation on the lid which ensures that water runs from the roof hatch at any time. The snow guard list in the hatch keeps snow and dust outside and lets air circulate in the roof hatch. Prepared for mounting of a cylinder lock. Additional treads made of aluminium in the casing facilitate comfortable access. The aluminium treads are already mounted in the extra casing.

 

1. Roof Hatch made of hot-dip galvanized steel
Including:

Snow guard protection
Prepared for mounting of a cylinder lock
Anti-slip edge profiles in aluminium
1 x handle – single hand operation
2 x gas springs for easy operation

2. Extra casing
Including:

Aluminium thread with anti-slip
H-profile mouldings and metal fittings.

3. DOLLE Loft ladder
clickFIX® 76G

clickFIX® thermo comfort

REI 45 Comfort

DOLLE REI 45 – made to measure
SW56-4 – made to measure

Snow protection in the cover. The snow guard list keeps snow and foliage outside and let air circulate in the hatch box. The double lock is prepared for mounting of a profile cylinder.

Easy to operate. The roof hatch is easy to operate with one hand with a good ergonomic handle and 2 strong gas springs on the inside of the hatch. 

 
 Rubber buffer and aluminium profile protect the lid. The slight distance to the lid creates a gap for ventilation
 

Tread included in the casing. Additional treads made of aluminium in the casing facilitate the comfortable access. The aluminium treads are already mounted in the extra casing.

 

 
 
 

 

 
 

 

 

MODULAR SYSTEM ROOF HATCH – EASY INSTALLATION

 

 

 

 

Big advantage of the DOLLE Roof Hatch lies in the modular construction with individual, lightweight components. You install one after the other without use of crane and just by one man.

 

 
 

1. Mount loft ladder

2. Add casing on the loft ladder

  • 1 × casing (62,50 – 72,50 cm high)
  • 2 × casing (86,65 – 96,65 cm high)
  • 3 × casing (110,80 – 120,80 cm high)
  • 4 × casing (134,95 – 144,95 cm high)

3. Fit the roof hatch – and you are done

 

 

 

Floor-to-ceiling-height (A)

Max.

Standard measurements:

274,0 cm

  

Made to measure:

 

REI 45

336,0 cm

REI 45 Comfort

290,8 cm

clickFIX® 76 thermo Comfort

284,6 cm

clickFIX® 76G

332,0 cm

 

Opening size (B)

 

Standard measurements:

110 / 120 / 130 / 140 cm

Made to measure:

110 – 160 cm

 

Opening size width (C)

 

Standard measurements:

60 / 70 cm

Made to measure:

60 – 80 cm

 

Construction height (D)

28,35 – 124,95 cm

 

Minimum height (E)

Min. 20 cm above roof

 

Total height (D + E)

48,35 – 144,95 cm

 
 

DIMENSIONS

 

 
 

FREQUENTLY ASKED QUESTIONS

 

WHAT IS THE U-VALUE ON THIS FLAT ROOF HATCH?

Our flat roof is an uninsulated solution. The insulation comes from the loft ladder and downwards and here, the u-value depends on the type of loft ladder chosen.

 

Instead, in flat roof solutions, air circulation is ensured, so that no condensation occurs in the “cavity” between the loft ladder and the flat roof hatch.

 

HOW DOES ONE END THE ROOF BOARDING AGAINST THE FLAT ROOF HATCH?

When installing the flat roof solution, the casings are mounted first – the roofing board can be mounted directly from the roof and up to 3 cm from the top edge of the casing. When this is done, mount the aluminum strips on the casing before finishing the cover. Please also see the mounting video.

 

IS IT TO BE ISOLATED OUTSIDE THE ROOF ON THE PIECE THAT STICKS 20 CM ABOVE THE ROOF?

No, when the roof board – aluminum edge moulding is mounted and aluminum edge strips and lids are mounted, you are done. Please see the mounting video.

 

WHAT IS THE WEIGHT OF EACH MODULE?

The trap door to a 120 x 70 cm flat roof hatch weighs 30,4 kg and the frame weighs 9,6 kg.

 

WHAT IS THE MAXIMUM APPROVED INCLINE ON THE ROOF?

Drainage from a flat roof is between 2 and 10 degrees, so the incline on the roof is 10 degrees maximum.

 

HOW DO I MAINTAIN A ROOF HATCH?

We recommend you complete the following maintenance at least once a year:

 

  • Control all screws and bolts and tighten if.
  • Apply oil to the moving components.
  • Check if the roof hatch opens with little effort and if the gas spring can keep the hatch open. 
  • If a lock is installed test the functionality of the lock.
  • Control if the assemblies between all hatch elements are still assembled and tight.

 

 

 

IS THE FLAT ROOF HATCH MADE FOR SPECIAL MEASURES, SO THAT THE HATCH FOLLOWS THE INCLINE? IF SO, WHAT IS THE HIGHEST POSSIBLE INCLINE?

Unfortunately, it is not possible, as it will affect all angles in relation to the opening of both the flat roof hatch and stairs. The incline of the roof can be 10 degrees maximum.

 

THE FLAT ROOF HATCH IS STILL NOT 100% TIGHT – CAN I ADJUST THE TOP SOMEWHERE?

Yes, you can – for adjustment of the top hatch, you can tighten it here to make a real solid connection of the lid.

 

 

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