Question 1

How long does Prolock bank revetment last?

Accepted Answer

Prolock Sigma has an expected service life of 50 to 60 years. The recycled plastic resists rot, mould, UV radiation and damage by rodents or insects. It therefore requires no maintenance throughout its service life.

Question 2

Can I install Prolock bank revetment myself?

Accepted Answer

Yes, most private customers install Prolock Sigma themselves. The lightweight panels (5–17 kg) and simple sliding joint eliminate the need for specialist tools. For revetments higher than 100 cm, the manufacturer recommends a strength calculation. Houthandel Jan Sok in Meppel provides this free of charge.

Question 3

How much does Prolock bank revetment cost per metre?

Accepted Answer

The total material cost of Prolock Sigma bank revetment, including panels, posts and capping beam, ranges from € 73 per linear metre (50 cm high) to € 183 per linear metre (200 cm high). Exact costs depend on panel height, post choice and project size. Houthandel Jan Sok offers free delivery on orders from € 2,500.

Question 4

What is the price of plastic bank revetment per metre?

Accepted Answer

The price of plastic bank revetment per metre (Prolock Sigma, including panels, posts every 1.50 m and capping beam) is approximately € 73 per linear metre at a height of 50 cm, approximately € 107 at 100 cm, approximately € 146 at 150 cm and approximately € 183 at 200 cm. This generally makes plastic bank revetment less expensive per metre than a comparable hardwood sheet-piling system, without maintenance costs over a 50–60 year service life. Request a free strength calculation for an exact quote.

Question 5

Do I need a permit for bank revetment?

Accepted Answer

That depends on your municipality and water authority. In many cases, revetment up to 1 metre high is permit-exempt, but you must always check with your water authority. Some water authorities require notification even when no permit is needed. If in doubt, contact your local water authority.

Question 6

Which posts should I use with Prolock Sigma?

Accepted Answer

The manufacturer recommends cylindrically machined spruce posts with a minimum diameter of Ø10 cm. Posts are driven into the ground at a maximum spacing of 1.50 metres centre to centre. Hardwood posts or steel tube piles may be required in harder soil or for deeper revetments. Houthandel Jan Sok keeps all post types in stock.

Question 7

Is Prolock Sigma suitable for ponds?

Accepted Answer

Yes, Prolock Sigma is widely used around ponds and water features. The 50 cm-high panels are ideal for pond edges. The material withstands permanent contact with water and requires no maintenance.

Question 8

What is the difference between Prolock Sigma and hardwood sheet piling?

Accepted Answer

Prolock Sigma is a hybrid system of lightweight plastic panels and timber posts. Hardwood sheet piling consists of solid timber boards (azobé or okan). Prolock is lighter (5–17 kg vs 40–200 kg), less expensive (€ 73–183/m¹ vs € 200–450/m¹), longer-lasting (50–60 years vs 25–40 years) and easier to install yourself. Hardwood offers a warmer, natural appearance and is stronger under extreme loads. Both systems are in stock at Houthandel Jan Sok in Meppel.

Question 9

Where can I buy Prolock Sigma?

Accepted Answer

Houthandel Jan Sok in Meppel keeps around 5,000 m² of Prolock Sigma in stock in all common heights. Order through the webshop at houthandeljansok.nl, by phone on +31 522 851 551 or by email at info@houthandeljansok.nl. Delivery is available throughout the Netherlands (free from € 2,500), Belgium and Germany. Collection from Meppel is also possible.

Question 10

How many Prolock panels do I need per metre?

Accepted Answer

Each Prolock Sigma panel is 50 cm wide. You therefore need 2 panels per linear metre of bank revetment. For 10 metres you need 20 panels; for 25 metres, 50 panels. You also need approximately 1 timber post every 1.00 to 1.50 metres.

Question 11

Does Houthandel Jan Sok deliver outside Meppel?

Accepted Answer

Yes, Houthandel Jan Sok delivers throughout the Netherlands, Belgium and Germany. Delivery in the Netherlands is free on orders from € 2,500. Delivery to Belgium is a flat rate of € 175 incl. VAT (own truck). Germany is charged at € 2 per kilometre. Collection from the Meppel site is also possible.

Product	Size	Weight	Stock	Price (incl. VAT)
Damwandschot \| 50x50 cm Prolock Sigma kunststof SKU 2023999181640	50 × 50 cm	4,5 kg	1000 pcs	€ 17,25
Damwandschot \| 50x80 cm Prolock Sigma kunststof SKU 2062157258794	50 × 80 cm	5,7 kg	980 pcs	€ 27,60
Damwandschot \| 50x100 cm Prolock Sigma kunststof SKU 2000648179876	50 × 100 cm	7,1 kg	860 pcs	€ 34,50
Damwandschot \| 50x120 cm Prolock Sigma kunststof SKU 2056390828395	50 × 120 cm	8,5 kg	906 pcs	€ 41,40
Damwandschot \| 50x150 cm Prolock Sigma kunststof SKU 2057646052403	50 × 150 cm	10,7 kg	968 pcs	€ 51,75
Damwandschot \| 50x180 cm Prolock Sigma kunststof SKU 2099765698230	50 × 180 cm	12,8 kg	1000 pcs	€ 62,10
Damwandschot \| 50x200 cm Prolock Sigma kunststof SKU 2018145613458	50 × 200 cm	14,2 kg	920 pcs	€ 69,00
Damwandschot \| 50x250 cm Prolock Sigma kunststof SKU 2036779097178	50 × 250 cm	17,8 kg	1000 pcs	€ 86,25
Damwandschot \| 50x300 cm Prolock Sigma kunststof SKU 13684	50 × 300 cm	21,3 kg	1000 pcs	€ 103,50
Damwandschot \| 50x400 cm Prolock Sigma kunststof SKU 13794	50 × 400 cm	28,4 kg	1000 pcs	€ 138,00
Damwandschot \| 50x500 cm Prolock Sigma kunststof SKU 13795	50 × 500 cm	33,5 kg	500 pcs	€ 172,50
Deksloof \| koppelstuk Prolock Sigma kunststof SKU 10334	15,5 × 10 cm	1,0 kg	284 pcs	€ 11,00
Afdekdop Prolock Sigma kunststof SKU 13796	12 × 12 cm	0,3 kg	476 pcs	€ 4,25
Hoekverbinding \| 3 meter Prolock Sigma kunststof SKU 10335	6 × 300 cm	4,0 kg	54 pcs	€ 55,00
Deksloof \| 6 meter Prolock Sigma kunststof SKU 10333	15 × 600 cm	32,4 kg	67 pcs	€ 175,00

Prolock bank revetment & plastic sheet piling - guide, prices & stock

Damwandschot | 50x100 cm Prolock Sigma kunststof

Ø100mm Vuren Gefreesde Paal (3,00m)

Deksloof | 6 meter Prolock Sigma kunststof

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