Is your crawl space flooded? Then it is important to have the water removed professionally. On this page you can read more information about removing water from (crawl) spaces and find an overview of the costs.
The costs of removing water from the crawl space
The costs for solving water in the crawl space are made up of 2 parts:
The removal of the water from the crawl space.
The waterproofing of the basement so that the water does not return.
On average, solving water problems in the basement costs £150 per square metre. This cost includes injecting the walls and pumping away the water. See average prices per technique or method in the table below.
| Technique/method | Price including VAT. |
|---|---|
| Drainage (installation of drainage pipes so that excess moisture is drained) | From £1,000 |
| Drainage pumping | £100 |
| Walls injection | £1.000 |
| Foam concrete | £ 200 per square metre |
| Placing air vents | From £ 200 each |
| Bottom sealing (with shells or isopearls) | £20 per square metre |
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Is the water in your basement instead of your crawl space? Find more information about solving water in your basement in our price guide: moisture control basement.
Water in crawl space: why solve it?
You may be wondering why water in crawl space needs to be solved as soon as possible. You are not bothered by the water, as it is under your living space. Read here why solving water in the crawl space is important.
- Deterioration of the home
Water in the crawl space is often caused by groundwater infiltrating the floor and walls. From the walls, moisture migrates to the floor of your home. Wood rot of the floor and moisture problems in the walls or floor are the result. This is because the moisture migrates upwards and then reaches the walls of your living room or kitchen, for example. This results in moisture stains and mould. - High humidity in the home
Moisture in the home negatively affects the finish of your wall and your health. Wallpaper and plaster is affected by moisture stains. High humidity leads to chances of (chronic) colds, headaches and respiratory problems, for example. - Moulds and pests
A humid environment is the ideal place for moulds, algae, mosses and pests to grow. Moulds, algae and mosses are bad for your health, even if they are under the floor. Moulds, algae and mosses in turn attract pests such as flies and silverfish. - A high energy bill
A cold floor is the result of a damp crawl space. A damp environment is less easy to heat. As a result, heating costs can rise significantly in the winter months.
Causes of water in the crawl space
A damp crawl space or water in the crawl space can be caused by several problems. Determining the cause is necessary for the right moisture control technique. Read possible causes of water in your crawl space here.
- Inadequate ventilation
Ventilation is necessary to remove the moisture present. High humidity leads to mould growth and rising damp. Rising damp then becomes visible on the walls and floor of your home. - Groundwater
Many homes in the Netherlands are deep below the water line. This puts pressure on the crawl space from groundwater. Eventually, groundwater infiltrates the floor and walls of the space. This happens mainly in wet periods. - Leaking water pipes or sewage pipes
Among other things, the crawl space serves as a place where important pipes are stored. A leak in a water pipe or drainage pipe leads to leakage in the crawl space.
Solutions water in crawl space
A moisture control specialist will help you find the cause of the crawl space leakage. The cause is important to determine the right technique to remove the water permanently. Take a look at the different techniques and their advantages and disadvantages in the table below.
| Technique/method | Description | Advantages | |
|---|---|---|---|
| Drainage | A system in which the specialist sucks up the groundwater through pipes. These pipes are placed near the walls or all over the floor. | – Very effective – Wall drainage is very simple to install |
– For bigger problems, floor drainage is needed, this is a major job that costs a lot of money and time. |
| Drainage pumping | The water is pumped away from the crawl space. | – Effective way to completely dry out the crawl space | – Not a permanent solution |
| Soil sealing | A layer of insulating material, such as shells or sand is applied to the substrate. | – Groundwater is pushed away – The crawl space becomes warmer and drier |
– Not suitable for extremely wet crawl spaces – Shells and clay pellets make the crawl space less accessible as a thick layer needs to be applied. |
| Foam concrete | A small layer of foam concrete is applied to the bottom of the crawl space. | – Insulating and moisture resistant – Crawl space remains easily accessible |
– Large investment – Crawl space becomes narrower |
Tips for water in the crawl space
You are suffering from water in the crawl space or basement of your home and you are looking for a suitable solution. Or maybe you’d rather prevent water in the crawl space? Then read the handy tips below.
Tip 1. Keep humidity levels in the crawl space
The crawl space is under the entire surface of your home. High humidity makes for a cold, chilly space. Underfloor heating, on the other hand, actually warms the floor. Therefore, try to maintain the humidity in the crawl space. How can you do that? Check out the tips below.
- Place vents. Ventilating the crawl space properly keeps the humidity in the room low. The damp air is removed through the ventilation grates. Note here that too much ventilation is not good either. Before installing a ventilation grille, a corridor should be created to the outside air.
- Insulate the crawl space. By having the bottom of the crawl space insulated with a ground cover, the humidity in the space will be much lower. This is due to the moisture-absorbing properties of the ground covers. In addition, a ground cover prevents the formation of fungi and mould. Cover the soil with, for example, shells, sand, clay pellets or isopearls.
Tip 2: Look for a specialist
Do you want to be sure you choose the right solution for solving moisture and/or water in your crawl space? Then get advice from a specialist. Request up to 6 moisture control quotes here free and without obligation and compare the specialists on the following points:
- Price: Determine your budget and compare several prices. By comparing different prices, you will choose the one that best fits your budget.
- Planning. Ask about the specialist’s planning so that you can choose the specialist who will solve the problems in your crawl space as soon as possible. This will prevent negative consequences such as damage to the house or high energy bills.
- Certification/reviews. Check out the specialist’s labels and reviews. A hallmark tells you more about the specialist’s guarantees and working methods. Want to know if you can trust the specialist with your project? Check reviews, if possible.
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