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Email: info@drdlik.co.uk            Monday - Friday 8 am to 5 pm


Wood split shingle / FAQ


Frequently asked questions about wooden shingles.



TYPES OS SHINGLES


Shingles can be divided by the method of production into chipped and cut and according to shape into Wallachian and Alpine.

- Alpine shingles are mainly made of larch wood by splitting. It has no tongue and groove; it is laid in two or three layers. In Alpine countries (Austria, Germany, Switzerland) it is used for roofs and facades.

- Wallachian shingles differ from the Alpine shingles by a cut-out groove on one side and a chamfer on the other side that fits into the shingle groove. It is usually made of spruce, less often larch or other wood. Production involves a high proportion of handwork. The Wallachian shingle can be used on both roofs and walls. Shingle protected façades have high resistance to strong wind and side rain. For this reason, they are often used on mountain huts. When renovating old huts, they protect the original construction and at the same time allow the building to breathe.

- Chipped shingle are made by traditional manual splitting that does not break wood fibers. Wood split along the fibers has a smooth closed surface. This is a prerequisite for the shingle to not absorb water and your roof to last as long as possible.

- Cut shingle In the production of cut shingles, log splitting is replaced by cutting. Production of cut shingles is faster and cheaper. Cutting, however, breaks the wood fibers, so the shingle produced this way has a much shorter lifespan than traditional chipped shingle.

- How do you recognize cut and planed shingles? The surface of the cut shingle is rough due to the broken fibers. Such a shingle is afterwards processed by finishing or milling, so its surface shows traces (ripples) of these procedures. Although the surfaces of such shingles can be smoothened, so the impression is perfect. Broken wood fibers soak up water and reduce the lifetime of the roof.



Dimensions and applications

 

 Drdlik- dimensions of wooden shingles

 

Drdlik- wood shingle splitting

The most common dimensions of a wooden shingles, Wallachian type (by groove):

-          Straight shingle

-          Conical shingle

 

Conical shingle, so called corner or "taper", for covering corners and valleys.

Drdlik- oblique wooden shingles

 

TYPE

LENGHT

WIDTH

THICKNESS

PACKAGE

USE

50 straight

50 cm

5 – 15 cm

18 -22 mm

4 bm

Basic template - flat roof sections

40 straight

40 cm

 5 – 15 cm

18 -22 mm

4 bm

End of ridge, garden houses, shelters

30 straight

30 cm

5 – 15 cm

18 -22 mm

4 bm

Foundation of roof, end of ridge, garden houses, shelters

50 conical

50 cm

5 – 15 cm

18 -22 mm

50 ks

Valleys, corners, dormers, turrets

60 conical

60 cm

5 – 15 cm

18 -22 mm

50 ks

Valleys, corners, skylight, turrets

 

There are several technological procedures for impregnating shingles


A, under pressure in vacuum (pressure-vacuum) in a Wolmanit CX-10 solution

B, by soaking in Bochemit QB Profi solution

C, by spraying with Bochemit QB Profi solution directly right on the roof.


Demonstration of various color and technological types of impregnation

Spruce shingle - colorless impregnation Bochemit QB Profi

Spruce shingle - red-brown impregnation Bochemit QB Profi

Spruce shingle - pressure impregnation with Wolmanit CX-10

Larch shingle - no impregnation

Drdlik- spruce shingle wood

Drdlik- spruce shingle red brown impregnation

Drdlik- spruce shingle pressure impregnation

Drdlik- larch shingle

Only custom made

we use this impregnation

Only custom made

Without impregnation

 

The shingle with pressure-vacuum impregnation must be ordered in advance to allow the shingle to dry again.

 

Larch vs. Shingle spruce


Spruce shingle

Spruce shingles must be impregnated against biotic and climatic influences with chemical substances - impregnation. This will slow down the natural degradation of wood. We have several technological procedures for shingle impregnation to choose from.

 


Larch shingle


The larch shingle is not impregnated. It is very weather-resistant due to the natural, specific composition of resin contained in wood.

 



Types of impregnation


Pressure-vacuum impregnation

- The goal of modern wood protection is the maximum possible protection of wood while minimizing environmental impact. A wood preservative Wolmanit CX-10 applied by pressure-vacuum impregnation provides protection without using chromium salts yet is very effective. Pressure-vacuum impregnation achieves a deep penetration of Wolmanite into the wood, which acquires a greenish color. The shingles are impregnated according to exposure class 4: wood in permanent contact with the soil or permanently exposed to strong moisture.

 


Soaking

- Concentrated water-soluble fungicide and insecticide wood preservative Bochemit QBProfi. Intended for impregnation of building timber in exterior, when using it is recommended to apply the product by the method of long-term soaking or add a coating too. The product provides long-term protection against wood-destroying insects. Protects wood against wood decaying fungi (including Serpula lacrymans and dry rot) and fungi in general.

 


Spraying Bochemit QB Profi directly on the roof

- We recommend this procedure only to unify the shingle coloring on the roof, as the impregnation itself is insufficient. As a first choice, we recommend the two previous impregnation options. You can use this option in the years to come as an additional protection against mosses, lichens and weather conditions. Even after spraying and drying, it is necessary to apply the final coating with Karbolineum Extra oil paint.

Drdlik- colored impregnation wood shingle



In the following sections, we present the details of laying wooden shingles


- Shingles can be used to cover roofs that have a slope of 35 to 90 degrees.


- The minimum recommended roof slope is 25 °. The greater the slope, the longer the shingle lifespan. As the old Czech saying goes, "each degree of slope equals another year of lifespan," (without maintenance). Maintenance and coating will extend the lifespan to 50 - 80 years.


- The shingle roofing is laid from bottom to top.


- Do we start from “left to right or from right to left,,? Where the shingle is laid first depends on the prevailing wind direction!


- The roof shingles are toe-tipped against the prevailing wind direction!


- Similarly, the last row on the ridge leaves a 100 mm overlap on the prevailing wind direction.


- For assembly we use galvanized nails.


- We recommend the use of a diffusion foil to ensure 100% water resistance.


- Installation is performed on 6 x 4 cm slats.


- Plank shutters are not recommended due to insufficient ventilation from the bottom of the covering.


- Any roof shape, even the most complex, can be covered with shingles without using any other material, such as sheet metal.


- When laying the shingles down, each one is inserted into the groove and hammered in.


- If you nail the shingle too hard there is a possibility that it will break in half. So, one must be careful and do it gently.


- Shingle is nailed to the roof spatially dried, with max. 20 % wood moisture.

 



Basic types of laying

   
Simple - laying one layer of shingles

- This method is suitable mainly for shelters, garden houses, roofs and farm buildings. The shingles overlap each other by 10 cm.

    
Double - laying two layers of shingles

- This method is suitable for all types of roofs, especially residential, where we want to have 100% certainty that there is no leak. The shingle is doubled on the entire roof (there are always two shingles above each other) and the overlap is 25 cm at the most. However, we recommend an overlap of 22 - 24 cm.

Drdlik- laying of wooden shingle
Drdlik- start laying of wood shingle                                        Drdlik- end of laying wood shingle

Drdlik- method of roofs wod shingle

 

Wall claddings


For buildings with wooden shingles, a simple laying is performed, meaning an overlap of 5 - 10 cm and the tip against the prevailing wind direction.

More on facing walls of shingles.

Drdlik- facing walls of shingles.  Drdlik- facing walls of wooden shingles.

    

 


The valleys and corners


For the corners and valleys, we use the conical shingles, so-called corner shingles or “temper”.

Drdlik- the valleys and corners shingle           Drdlík- wood shingle valleys and corners           Drdlik- shingle for corners and valleys

 

   

 


Cost of wooden shingle roof


Each roof is unique and therefore it is not possible to use a simple mathematics and price list when determining its price. Our estimates are based on experience. However, we will be happy to calculate the price for you free of charge.

- Please enter as complex dimensions as possible, because the more accurate are the data you enter, the more accurate will the material consumption calculation be.

- Contact details - Roofing - Dimensions - Attach photos / drawings

-
If we are unable to process the offer based on the information provided, we will contact you to arrange further action.

- Bids are normally sent within 5 working days. If this is too long for you, we will be happy to give you a priority if you notify us.


 

In addition to the exact calculation of roofing and necessary accessories, you will also get the ideal solution draft, many years of experience + professional consultancy and advice + free training.

 

 


However, if you want to calculate the roof area yourself, here is a helpful hint how to do it.

-
When calculating how many m2 of shingle is needed per roof area, do not forget the shingle overlap.
- Wooden shingle is packed in 1 m² package, double laying (that’s 4 running meters).

 


What it means: if we still have the same package but different laying?

-
4 rm - double laying, it is in a package of 1 m² (25 cm overlap)
- 4 rm - simple laying, it is in a package of 1.5 m² (with a covering overlap of 10 cm)

 


For better orientation
you can find specifications in the table below: (1 pack = 1m² double installation (at 25 cm overlap), which is 4 rm when straightened into the groove to the normal length).

- We recommend an overlap of about 23 - 24 cm. The overlap of 25 cm is the upper limit.
- We recommend the use of a diffusion foil to ensure 100% water resistance.

 

Type of installation

Roof in m²

Shingle overlap

Final consumption of shingles in package

Coefficient

1 package = 1m²

Simple

200 m²

10 cm

134 pack.

1 pack. = 1,5m²

Double

200 m²

25 cm

200  pack.

1 pack. = 1m²

Double

200 m²

24 cm

208 pack.

1 pack. = 0,96m²

Double

200 m²

23 cm

217 pack.

1 pack. = 0,92m²

Double

200 m²

22 cm

227 pack.

1 pack. = 0,88m²

 


An example:


If you calculate a roof area of 200 m², double laying, with an overlap of 25 cm = you will need 200 packages. So far it seems logical. But if you do not pass this information onto the roofer and he will out of experience make a 24 cm overlap (because its better than 25 cm), you will need 208 packages for the 200 m², and therefore you’ll be 8 packages (8 m²) short.






Do not hesitate to contact us and ask us anything on our email address: info@drdlik.co.uk. We’ll gladly answer any questions you might have.

 

Thank you for your time and interest, Your Drdlík team.


MTFmZW