top of page

Roof constructions – Sedum roofs, Tin roofs and Cardboard roofs

Sedum roof: A green roof for durability and aesthetics

Sedum roofs have become a popular solution for those who want to combine functionality with a greener building. It is particularly useful for reducing heat loss in cities and managing stormwater efficiently. The green surface also offers excellent sound insulation and reduces air pollution. For those looking for durable and energy-efficient roofs, sedum roofs are an environmentally friendly alternative.


A detached house in nature with a sedum roof

















Example of layer construction for sedum roofs :

  1. Moss-sedum : The top layer consisting of plants such as sedum and moss, which gives the roof a natural and aesthetic surface as well as improved insulation and water retention.

  2. Drainage layer : A layer that allows efficient drainage of water to avoid stagnant water and ensure plant health.

  3. Sealing layer membrane YEP 6500 : A water-repellent layer that protects the structure of the wood from moisture and water penetration.

  4. Sealing layer YEP 2000: An additional layer of sealing layer that acts as an additional barrier against water.

  5. Råspont : Wooden boards that act as a stable foundation for the other layers of the roof.

  6. Roof beam c 600, 900, 1200 (Laminate, solid or lightweight beam) : Load-bearing beams in various materials that form the structural basis of the roof.

  7. Isover Insulsafe or equivalent : Insulation material that provides thermal insulation and sound attenuation.

  8. Vapor barrier : A layer that prevents moisture from the inside from penetrating the insulation.

  9. Horizontal stud c 300: Horizontal studs with 300 mm spacing to create stability and support.

  10. Isover uni-board 35 or equivalent : Complementary insulation for improved heat and sound insulation.

  11. Plasterboard : The inner ceiling layer that acts as a smooth and paintable surface.


Cost of sedum roof :

  • Material cost : About SEK 400–600/m² for substrate and plants.

  • Installation cost : Total between SEK 1,200-2,000/m² depending on the roof's slope and specifications.


Tin roof: A sustainable and cost-effective choice

Sheet metal roofs are one of the most durable options when it comes to roofing materials. With a long lifespan, low weight and good insulation properties, tin roofs are an excellent choice for both villas, garages and larger buildings. In addition, it is low maintenance, making it a popular choice for both private and commercial buildings.


A close-up of a tin roof with nature in the background

Example of layer construction for metal roofs :

  1. Tin roof : The outermost layer, consisting of metal sheets.

  2. Underlay : A layer of roofing paper for water repellency.

  3. Råspont : Wooden boards that provide a stable foundation.

  4. Air gap : An air space for ventilation and to prevent condensation.

  5. Wind protection : A protection against drafts and moisture.

  6. Roof trusses : The frame that forms the load-bearing structure for the roof.

  7. Isover truss plate 32 or equivalent : Insulation adapted for trusses.

  8. Vapor barrier : A vapor-tight layer that prevents moisture from penetrating the insulation.

  9. Horizontal rule c300 : Horizontal rules with 300 mm distance for stability.

  10. Gypsum board : Gypsum board that acts as the inner ceiling layer.


Cost of tin roof :

  • Material cost : Between SEK 150–350/m² depending on the choice of sheet metal.

  • Installation cost : Total between SEK 700-1,500/m² , including materials and labor costs.


Cardboard roofs: an economical alternative for flat roofs

Cardboard roofs are an affordable alternative for low-sloping or flat roofs. It is easy to lay and perfect for simpler buildings such as garages or storage rooms. Cardboard roofs also offer good water-resistant properties and are easy to maintain.


A close-up of a cardboard roof with wood in the background

Example of warehouse construction for cardboard roofs :

  1. Roofing board: : The outermost waterproofing layer that protects against weather and wind.

  2. Underlay cardboard : A layer of underlay cardboard which provides extra water protection.

  3. Råspont : Wooden boards that act as a stable foundation for the roof.

  4. Air gap : A ventilation space that prevents condensation and improves the durability of the roof.

  5. Wind protection : A protection that prevents drafts and penetrating moisture.

  6. Roof beam c1200 : Load-bearing roof beams with 1200 mm spacing that form the frame of the roof.

  7. Isover truss board 32 or equivalent : Insulation specifically adapted to lie between the roof beams.

  8. Vapor barrier : A layer that prevents vapor penetration and protects the insulation against moisture.

  9. Horizontal stud c300 : Horizontal studs with 300 mm spacing to create stability and support.

  10. Isover uni-board 35 or equivalent : Complementary insulation for improved heat and sound insulation.

  11. Plasterboard : The inner ceiling layer that acts as a smooth and paintable surface.


Cost of cardboard roof :

  • Material cost : Between SEK 50–150/m² .

  • Total cost : Between SEK 300–600/m² depending on the choice of cardboard and the extent of the installation.


Summary: What kind of roof should you choose?

The choice between sedum roof , tin roof , and cardboard roof depends entirely on your building's needs and your budget. Here is a brief summary:

  • Sedum roofs are the best solution if you want an environmentally friendly roof that contributes to sustainability and energy efficiency. The cost of sedum roofs is between SEK 1,200–2,000/m² .

  • Sheet metal roofs are the most durable option and are suitable for both villas and commercial buildings. The cost of sheet metal roofs varies between SEK 700-1,500/m² .

  • Cardboard roofs are an economical alternative, perfect for simpler buildings such as garages or storage rooms, with a cost of between SEK 300-600/m² .


Contact us for professional advice

Do you need help with construction drawings or building permit drawings for your roof? We at Konstruktionshjälpen are ready to help you all the way from planning to finished result. Contact us today for a quote or advice!



Telephone : 08-400 692 79

We look forward to helping you create sustainable and well-planned roof solutions!


Request a quote

Team Meeting

Boka möte med team

WHAT WE OFFER

Our services & prices

Here Konstruktionshjälpen describes all our services and what the results can be used for. I hope you find something that suits your project. You are welcome to call us at any time to describe your case in more detail. If you need help with construction terms, you can go to our glossary , to become wiser in your project.

Projects suitable for these services:

Balcony or terrace, detached house (complementary dwelling house), detached house (complementary building), annexed extension, measures exempted from planning permission, carport or garage, fireplace, stove or fireplace, holiday home, storage room or greenhouse, glassed-in balcony or conservatory, stove, fireplace or fireplace, wall, new residential/holiday home, plank or fence, demolish a building, screen roof, solar cells or solar collectors, fence or plank, terrace or patio, extension, extension - mitigation measure, extension, conservatory, greenhouse or storage

bottom of page