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Grenaisol

Simply perfect, perfectly simple solution for your new fireplace

Construction and insulation in one

Recommended by stove experts


Properties of self-supporting Grenaisol insulation board

Properties of self-supporting Grenaisol insulation board

Grenaisol is made of expanded vermiculite and a special inorganic binder. It is characterized by an ideal combination of insulating and mechanical properties.


Despite its low weight, it is strong enough to provide the necessary rigidity of the fireplace enclosure. It has a balanced temperature curve and it is easy machinable and harmless to health.


We are constantly developing our products, testing them in laboratories, and listening to customer reactions. That's why we have improved the Grenaisol boards and created a new concept with a perimeter frame. This frame increases the edge strength when handling and improves the precise joining of the boards.

Grenaisol boards can be combined with GRENATHERM and GRENACOAT systems.


Reaction to fire according to ČSN EN 13501-1: A1

Working with Grenaisol boards and their application

Working with Grenaisol boards and their application

Working with Grenaisol boards is very simple. You do not need any supportive construction, all you need is the boards themselves, Grena Klebepaste glue and self-tapping screws that you screw in without pre-drilling. Thanks to the grooves on the Grenaisol surface you can simply apply thin-walled plaster which you can paint and tile with ceramic tiles.


The weight and dimensions of the boards allow you to handle and assemble it yourself. You can cut them with an electric or hand saw. It releases no fumes or smell even at high temperatures. Nothing will irritate your skin or mouth.


Only a minimum of dust particles are released during processing so the primer is not required before the final surface finish. 

Grenaisol Pro - ideal solution for larger fireplace enclosures

Grenaisol Pro - ideal solution for larger fireplace enclosures

Grena a.s. developed a special variant of Grenaisol boards, namely Grenaisol Pro, which are designed for easier and faster construction of high-quality fireplace casing and larger design enclosures, which become the dominant feature of the interior.


The size of these boards (600x1200, 800x1200 mm) enables comfortable design enclosure of even wide fireplace inserts.




Grenaisol Arcus - a simple way to create rounded shapes

Grenaisol Arcus - a simple way to create rounded shapes

Customers have requirements for different rounded fireplaces. For these cases we designed a special shaped part Grenaisol Arcus. With it you can easily create arcs with a radius from 175 mm.


The special lock on the panel ensures full insulation of the wall even at different range of arcs and therefore the wall of insulation is not weakened


Machining and processing Grenaisol

Machining and processing Grenaisol

Grenaisol boards are easily machined with conventional woodworking tools. When working with them, there is minimal dust.


We recommend using proven Grenacoat materials to assemble and complete structures.


Advantages of Grenaisol boards

Advantages of Grenaisol boards

  • Construction and insulation element in one 
  • Stability and high quality material 
  • Simple machining with common tools 
  • Easy surface treatment 
  • Made from exclusive raw materials using high technology 
  • Non-combustible and extremely resistant material to high temperatures and thermal shock
  • Lightweight, easy and time-saving installation 
  • Combination with GRENATHERM and GRENACOAT systems 
  • Harmless to health - does not contain asbestos, nor mineral and glass fibers 
  • CE tested and certified 
  • 100% natural

  • For building a fireplace, fireplace enclosures 
  • For insulating walls behind a heat source 
  • Creating a fireplace chimney 
  • For insulation of storage chambers 
  • The partition between the fireplace and the room 
  • For insulating the chimney 
  • As protection against heat source for cable or gas conduit 
Technical data

Basic sizes [mm]
600 x 800, 610 x 1000
Density [kg/m3]    
430
Thickness [mm]
30, 40, 50
Classification temperature [°C]
950


Technical data Grenaisol Pro  
Basic sizes [mm]
600 x 1200, 800 x 1200
Density [kg/m3]    
475

Thickness [mm]

​30, 40
Classification temperature [°C]
950


Technical data Grenaisol Arcus
Sizes of Arcus [mm]     

40 x 90 x 600

Density [kg/m3]
430
Classification temperature [°C]
950
15 ks pcs of parts Arcus are packed in paper box (26 x 61 x 21 cm) 30 paper boxes are loaded on one pallet=> 450 pcs 

Dle ČSN EN 13501-1, reakce na oheň, třída A1 - nehořlavé

Tolerances of boards:
- length and width ± 5 mm (GrenaisolPro ± 1 mm)
- thickness ± 1 mm
- density± 10%

Grenaisol basic size: 610 x 1000 mm


Thickness
(mm)
Density
(kg/m3)
Weight of board (kg) No of boards (pcs) Total weight of full palet (kg) No of pallets on truck (pcs) Total weight on truck (kg) Sizes of full pallet
width – length - height  (mm)
30 430 7,9 96 818 23 18 823 1020 1240 1640
40 430 10,5 72 816 23 18 768 1020 1240 1640
50 430 13,1 58 820 23 18 855 1020 1240 1650

Grenaisol basic size: 600 x 800 mm


Thickness
(mm)
Density
(kg/m3)
Weight of board (kg) No of boards (pcs) Total weight of full palet (kg) No of pallets on truck (pcs) Total weight on truck (kg) Sizes of full pallet
width – length - height  (mm)
30 430 6,2 96 645 33 21 292 810 1220 1640
40 430 8,3 72 648 33 21 371 810 1220 1640
50 430 10,3 58 647 33 21 364 810 1220 1650

Grenaisol Arcus - component for rounded shapes, min. radius175 mm, size 90 x 600 mm


Thickness
(mm)
Density
(kg/m3)
Weight of board (kg) No of boards (pcs) Total weight of full palet (kg) No of pallets on truck (pcs) Total weight on truck (kg) Sizes of full pallet
width – length - height  (mm)
40 430 0,93 450 469 32 14 992 810 1210 1250

15 ks pcs of parts Arcus are packed  in paper box (26 x 61 x 21 cm). 30 paper boxes are loaded on one pallet=> 450 pcs.

Grenaisol PRO basic size: 600 x 1200 mm


Thickness
(mm)
Density
(kg/m3)
Weight of board (kg) No of boards (pcs) Total weight of full palet (kg) No of pallets on truck (pcs) Total weight on truck (kg) Sizes of full pallet
width – length - height  (mm)
30 475 10,3 96 1 049 20 20 976 1210 1210 1640
40 475 13,7 72 1 046 20 20 928 1210 1210 1640

Grenaisol PRO basic size: 800 x 1200 mm


Thickness
(mm)
Density
(kg/m3)
Weight of board (kg) No of boards (pcs) Total weight of full palet (kg) No of pallets on truck (pcs) Total weight on truck (kg) Sizes of full pallet
width – length - height  (mm)
30 475 13,7 48 708 33 23 351 810 1210 1640
40 475 18,3 36 709 33 23 390 810 1210 1640

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