Problem solving

Is it normal that the garden house has water marks and/or moisture stains?

Yes, after a long period of rain – or on the weatherside, water marks or moisture stains can be visible. Therefore we recommend the following:

  1. Apply 1 layer of stain to the inside walls of your garden house.
  2. Have a damp proof membrane [option] installed during the production process (post-insulation is possible).
  3. Place one or more ventilation grids!
  4. If you want, you can install OSB boards on the inside.
  5. Treat the outside with Nano Coating Pro Woodprotector or with a colour stain.

Is it normal that the windows and doors are jammed?

Jammed windows and doors can be fixed by loosening or fastening the adjustable hinges.

Adjust doors:
Push the door upwards by holding the handle until the door is released from the hinges. Use a screwdriver to adjust the hinges. Rotate one time anticlockwise in summer, and one time clockwise in winter. Repeat until the desired result is achieved.

Adjust windows and doors + lubrication of all moving parts. Ask our Christiaens Yvan team to do this for you at the current hourly rate and call-out charges.

For doors: adjust the height of the door at the rollers. It is also recommended to lubricate the door lock and the hinges at regular intervals. Wood treatment: every 2 years, you should apply an extra layer of stain (free colour choice) to the interior side of your wooden window frames and doors.

My Salt Green or Cosy Grey garden house has stains. Is that normal?

Wood in those colours was autoclave treated and needs time to dry. This drying process could take a few months to complete.

My garden house or wooden shed is moist.

This happens especially during winter. Good ventilation is very important, and a small construction dryer might work miracles.

Because of the moist, window and door frames might expand, and subsequently get clamped. This can also happen right after the garden house is built, when the concrete slab has not completely dried out.

Is it possible that the boards of my garden house do not all have the same width?

Yes, whitewood is very sensitive to weather conditions such as moist (swelling), sunlight (shrinkage), and it can measure up to a few mm difference.

Is it normal that the flat roof edging is made of pieces with various lengths?

Yes, it exists of 2 or more pieces and there is no minimum nor maximum length. 
Along the full roof length and on the corners the eaves are fit into each other through aluminium profiles. However, the length of the eaves is made out of one piece. Through special gluing, a unique and beautiful result can be achieved.

When opening the packing of the supplied garden house, I see blue liquid. Is this normal?

This is indeed possible. After production, the entire garden house is autoclave-treated for a while, so all elements are pre-treated. Even though perforated packing is used, it might be that not all (blue-coloured) liquid has drained. This is, however, no problem and is particular to the production procedure.

Is it normal that, in summer, my door panels have gaps?

Yes, the production procedure considers maximum expansion (during winter). In summer, wood can shrink which might result in gaps. It is yet very easy to manually, without using any tool, shift the tongue and groove boards to close the gaps.

Is it normal that my roof retains some water?

During production, a slope gradient up to 3% into the direction of the drain side is provided. Between the drain hole and the side, or between both drain holes some water might be retained. This is, however, absolutely not harmful to your roof.

Is it normal that roof beams of autoclave garden houses are not fully sealed?

All parts are manufactured in our workshop, after which they are put under pressure in a container. Only by this procedure, the saw cut is treated. We try to consider shrinkage and expansion as much as possible beforehand, but sometimes there is a gap nevertheless. Such gaps are no disadvantage to the construction.

Is it normal that the outer walls of my Cedar/Oak/Iroko/Thermo ayous/Cosy Grey/Salt Green wood garden house are composed of boards with different lengths?

Yes it is, because we use all-round tongue and groove boards. They were specifically manufactured to cover industrial buildings, house fronts, etc. The easy to manoeuvre boards have been perfectly cut and milled in our production hall. After the cedar wood has weathered, the various lengths won’t be that visible and it shall not affect the strength of your garden house. On the contrary, the wood shall bend and move to a lesser extent.

Is it normal that the stainless steel nails in panel constructions are visible? Why are they not concealed?

Yes it is. 25 years ago, the boards where only fixed by hidden nails in the tongue and groove joints. Since wood naturally expands and shrinks (due to weather conditions), they got loose after a while. At Yvan Christiaens, boards are nailed in a concealed manner, and then nailed through the wood for extra solidity. Over time, these stainless steel nails become almost invisible.

Are cracks and fissures in the wood normal?

Wood is a natural product: in summer it shrinks, while in winter it expands. Shrinkage cracks, bows or dead knots are perfectly normal, also in laminated wood. Window and door hinges should therefore also be adjusted. Impregnation might result in marks, white deposit or faded parts. All of this is normal and inevitable. The construction’s strength shall not be affected by any of this.

Is the presence of resin glands normal?

Wood is a living material, both in storage and when being processed. Resin may ooze out of softwood; this is normal. If this bothers you, it can be removed with a wood chisel or with turpentine.

The boards have different colours, is that normal?

Each tree has its own tint. So a difference in colour is logical, even after staining. This will diminish, and may even disappear completely, over the course of time and with exposure to sunlight.

Is it normal for the roof board to have scratches on it?

The roof cladding can develop small scratches during handling. However, this will not affect the quality of the cladding. It will not rust!

Why is there a crack near the hinges of my garden house door?

A crack on the outer part of the door at approximately 5 cm from the hinges? If the door of your garden house is installed in a corner, a clumsy move or the wind can make the door flip over, causing damage such as a crack. This is no structural defect. Install a doorstop to prevent the door from opening over 180°.


There are stains on the windows and I can’t remove them by any means. Is this normal?

We recommend to clean all glass elements of windows and doors within 8 days after installation of the garden house, and not to leave them exposed to the sun!
This could cause penetration of lime and/or Cosy Grey or Salt Green products, which is indeed very difficult to remove. We recommend the use of acetone as a cleaning agent for glass.

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