Beware! Beware of scammers and fraud. There are companies using our name unlawfully! Read more about their methods here.
Menu
Our sewer services
Our sewer services
Beware! Beware of scammers and fraud. There are companies using our name unlawfully! Read more about their methods here.
Our sewer services
Our sewer services
Sink unblocking
✓ Deployment of in-house staff
✓ 3-month warranty
✓ Flat rate, no hourly rate
Call us at 085 303 9999
✓ Fixed price
✓ No call-out charges
✓ 3-month warranty
A clogged sink disrupts the entire household. That's why we make sure your sink flushes the way it should in no time. If it stops for you, we make it flow through. RBNL is there for you, 24 hours a day, 7 days a week and 365 days a year. Our friendly and skilled technicians have the right knowledge and materials to unclog your sink quickly and cleanly. Make an appointment by phone or through our website and have your sink unblocked by our professionals!
Is water staying in your sink and releasing unpleasant odors? Then you are most likely dealing with a clogged sink. To know the best way to unclog your sink, it is helpful to know the cause of the clog. A clogged sink has several causes. The most common causes are:
One way the sink can become clogged is for objects to accidentally enter the drain. Objects such as rubber bands, pins, cotton buds, papers or other small objects that end up in the drain can cause blockages. These types of blockages can be prevented simply by keeping small objects away from the sink.
A common cause of a clogged sink is excess waste that enters the drain with the water. Over time, grease and food scraps get stuck to the inside of the sewer system, causing the sink drain to clog at some point.
Is there a lot of lime in your water? Every time you turn on the faucet, small particles are left behind in your drain. The buildup of limescale can lead to a clogged sink.
A broken or shifted pipe can also be the cause of a clogged sink. Detecting this problem is just tricky. For this, call in a sewer expert.
Is your sink clogged and you want to unclog it? No worries. Call the sewer specialist and have your sink unblocked by our skilled technicians today! You've also come to the right place for drain unclogging and sink unclogging.
Do you want to unclog your sink? You often think that unclogging yourself is the best and cheapest choice. This is not always the case. If you are dealing with a superficial clog, you have a good chance of being able to solve it yourself. If it's a deeper and persistent clog, it's better to get the help of a professional right away. Our certified technicians have the necessary knowledge, experience and materials to unclog your sink. You not only benefit from our unconditional service, but also from a care-free warranty on the sewer service we provide. Do you have the same problem again within 3 months? Then we will solve it for you free of charge.
Nine out of ten providers charge by the quarter hour or half hour. We don't like ambiguities, which is why our rates are fixed and transparent. There are no additional costs, no matter how long the job takes. You will therefore not be faced with unexpected surprises.
Local unblocking
WC, shower, sink, drain, sink, washing machine
Main pipe unblocking
Unblocking by high pressure + camera inspection
Sewer inspection with camera
Checking for problems such as leaks or cracks
Smoke detection sewer system
Locating cause of sewer odor
Smoke detection & camera inspection
Mapping of piping system through smoke detection and camera inspection
€165 incl. VAT
€296 including VAT
€180 incl. VAT
€180 incl. VAT
€220 including VAT
✓ Flat rate, not an hourly rate
✓ 3-month warranty
✓ No call-out fee
✓ Flat rate, not an hourly rate
✓ 3-month warranty
✓ No call-out fee
Surcharges apply for unusual working hours. View working hours and the rates and surcharges applicable to the listed working hours to the right:
Normal rates apply on the following days:
- working days from 08:00 to 18:00
A 50% surcharge applies on the following days:
- working days from 18:00 to 00:00
- Saturday from 08:00 to 18:00
A 100% surcharge applies on the following days:
- all days from 00:00 to 08:00
- Saturday from 18:00 to 00:00
- Sundays and holidays
RBNL is here for you. Restoring your living and working comfort is our priority. That's why we won't leave until your sink drain is draining the way it should. When you choose RBNL, you can count on:
✓ Called today, helped the same day
✓ Deployment of our own professionals and equipment
✓ Carefree warranty. Same problem within 3 months? We'll fix it free of charge.
In addition, we work with fixed prices, so no additional costs. After all, transparency, customer satisfaction and reliability are of paramount importance to us. That is why we see your problem as our problem and offer unconditional service.
Is your sink clogged and you feel that the blockage is quite on the surface? Then you can try to unclog the sink yourself in a number of ways. A surface blockage is usually in or around the siphon. You can try to remove the blockage by unscrewing and cleaning the siphon. Other ways to clear a surface blockage are:
First, you can try pouring buckets of water down the drain. When you see a whirlpool forming in the water, this is often the sign that the sink is no longer clogged.
Baking soda (also known as cleaning salt) is a miracle drain cleaner. By flushing the sink with baking soda, you can loosen and dissolve dirt stuck inside the drain, which can unclog small clogs.
If you think your sink is clogged with grease residue, you can try dissolving the grease residue in the drain with dish soap. Fill a bucket with hot water and add a generous splash of dish soap. After this, slowly pour the mixture down the sink and let it take effect for a few hours.
Some minor clogs can be fixed by using a dishwasher tablet. Place the tablet in the sink drain and pour hot water on it. Let it soak overnight. The morning after, flush with one or two gallons of hot water.
Does the water in your sink still drain slowly? Then wait until there is no more water in your sink and put the mouth of your vacuum cleaner on the drain. With a vacuum cleaner, you can suck the drain out, with any luck sucking the clog along with it.
Has your sink become clogged with limescale? If so, the best way to try to unclog the sink is to flush the drain with baking soda and vinegar. Slowly pour the mixture down the drain (because the mixture will fizz) and let it soak overnight. When the soaking time is over, flush the drain with water.
Ploppers can cause wear and tear to the pipe. Therefore, always choose the above ways to unclog your sink first or call in a specialist.
Are your attempts at unclogging in vain or do you not have time to unclog your sink yourself? Then contact us by phone or make an appointment through our website and before you know it, our friendly technicians will be at your doorstep.
Sink clogged? No plumbing job is too big or too small. Contact us today!
Your living or working comfort is our priority!
Want to unclog your sink? We know better than anyone that a sewer problem can greatly reduce livability in your home. That's why we stand for unconditional service. Our professionals won't leave until your drain is completely unclogged, at no additional cost. After all, your satisfaction is our priority! With our unconditional service, we assure you of:
✓ 24/7 service
✓ Fixed prices, so no additional costs
✓ No solution = no payment
✓ 3-month warranty
In addition to unblocking services, we offer many other sewer services, including sewer management, sewer inspection, sewer rehabilitation and sewer cleaning.
At RBNL, we see your sewer problem as our problem. That's why we are not only here for you to unclog your clogged sink, but we also give you some tips to prevent your sink from becoming clogged:
By regularly flushing the siphon with warm water and a handful of baking soda, you will make the inside of the sink free of soap scum and body dirt. This way, you can prevent a clogged sink and unpleasant odors in your home.
By installing a strainer, food, debris and other items that can cause a clog in the sink will stay in the strainer and not end up in the siphon. This way you reduce the chances of a clog. Clean the strainer regularly. This way you can easily solve an incipient clog!
Make sure items such as pins and cotton swabs do not accidentally end up in the sink, which can lead to blockages.
By making sure that large amounts of food do not end up in the sink, you can prevent food and grease residue from clogging the sink.
Has your sink still become clogged and you want to unclog it? Then contact us. We will be happy to solve it for you! You can also count on us for drainpipe unblocking and various cleaning tasks such as gutter cleaning and down pipe cleaning.
Rioolbeheer Nederland is the specialist for unblocking, cleaning, inspecting and locating sewers, drains and pipes. Your happiness is our goal. Customer satisfaction is our top priority.
Branches
Contact
Tel: 085 303 9999
Address:
Address Amsterdam:
Jacob van Lennepkade 151 H
1054 ZL Amsterdam
Address Utrecht Bilthoven:
PC Staalweg 60
3721 TJ Bilthoven
Email address: info@rbnl.nl
CHAMBER OF COMMERCE: 87133989
Copyright © 2026 – RBNL. All rights reserved.