PU Grouting & PU Injection

What is PU Grouting or PU Injection, also known as Polyurethane Grouting Injection ?

PU grouting is a specialised technique that involves the injection of expanding polyurethane to stop any water flowing down or through cracks or to fill voids under slabs, concrete joints or behind concrete walls and joints. This method is very useful and effective when used on the underside or negative side of the water seepage, for example, from the underside of the leaking walls or the lower floor ceiling for issues involving upper and lower floor neighbours or in inter-floor water leakages. A pre-drilled hole will be prepared on the underside of the ceiling, and the PU grout will be injected using low/high pressure. The grout will then expand to fully fill up the void, crack or space that is caused by the water damage. This PU injection can be used for concrete cracks or expansion joints that are actively leaking.

Prima Seal Waterproofing Specialises in PU Grouting and PU injection Services

We specialise in PU injection to seal joints in concrete, screed or masonry as well as water-bearing cracks. We can also help with the repair of damaged false ceiling, including the opening and resealing up of broken or damaged false ceiling.

PU Grouting Concrete Crack Injection Technique:

Cracks in concrete happen overtime due to environmental issues such as thermal movement,drying shrinkage and other causes like nearby construction works or renovation works. If its not severe, it will be a minor problem and they will cause no instant issues or problems. But after some time, these minor and small cracks often become bigger problems and huge headaches, where water damage causes structural problems including reduced structural integrity due to water seepage.

We provide comprehensive PU injection / PU grouting services, using modern technology and the best equipment to use solutions for filling up the gaps ,voids and cracks in structures and bonding concrete and other materials permanently.

Protect your property and prevent further water damage. Call us now to stop and eliminate all water damage / water leakage issues. We will conduct a no obligation waterproofing inspection and give you the recommendation based on our professional advice. We use the best waterproofing material and waterproofing membranes that is essential in every waterproofing procedure.

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Our Projects

Bathroom/Toilet Waterproofing Services Singapore Condo – Bukit Timah

Bathroom/Toilet Waterproofing Services Condo at Bukit Timah, Singapore. We conduct a non-obligatory on-site assessment, with an official quote submitted for your consideration. For any enquiries, WhatsApp us at +65 8241 0032! (Click on image gallery below to enlarge) Prima Seal Waterproofing Singapore offers waterproofing services to solve toilet and bathroom water leakage issues, including toilet ceiling leaks, toilet floor leaks, and toilet wall

Posted August 4, 2021

Bathroom/Toilet Waterproofing Services Singapore HDB – Tampines

Bathroom/Toilet Waterproofing Services HDB at Tampines, Singapore. We conduct a non-obligatory on-site assessment, with an official quote submitted for your consideration. For any enquiries, WhatsApp us at +65 8241 0032! (Click on image gallery below to enlarge) Prima Seal Waterproofing Singapore offers waterproofing services to solve toilet and bathroom water leakage issues, including toilet ceiling leaks, toilet floor leaks, and toilet wall leaks. Our

Posted July 28, 2021

Bathroom/Toilet Waterproofing Waterproofing Services Singapore HDB – Bedok

Bathroom/Toilet Waterproofing Waterproofing Services HDB at Bedok, Singapore. We conduct a non-obligatory on-site assessment, with an official quote submitted for your consideration. For any enquiries, WhatsApp us at +65 8241 0032! (Click on image gallery below to enlarge) Prima Seal Waterproofing Singapore offers waterproofing services to solve toilet and bathroom water leakage issues, including toilet ceiling leaks, toilet floor leaks, and toilet wall

Posted July 21, 2021

Ted _Sirius

07:20 28 Nov 19

The interaction with the company has been very pleasant. The team is very professional - not just the people responding to the whatsapp but also the specialist who comes to inspect the water seepage at my apartment. Give you the confidence that they know what they are doing.read more

Cynthia Au

23:55 06 Sep 19

They are reliable and knowledgable in solving toilet leak issues. Their solution will be fast and hassle-free.

Wilfredo A

08:43 17 Aug 19

Very friendly and knowledgable waterproofing contractor. Thanks for the help in water leakage detection and advice.

Han Wei Ng

09:31 17 Jun 19

I contacted Prima Seal for chemical treatment of my leaking toilet which they were quick to response on all my queries and appointment arrangements via whatsapp. Unfortunately after the chemical treatment, the leak still persist, but Prima Seal stepped up and arranged for PU injection in my neighbor's toilet downstairs at no additional charge, and my problem is now solved. Will definitely recommend their services.read more

winglocke lee

06:53 31 May 19

Got Prima Seal Waterproofing to fix the issue of leaking at my lower floor neighbors’ 2 toilets ceiling.They did chemical proofing on both my toilets’ floors. Waited 2 weeks for complete drying n then did water testing where both my toilets were flooded for 4 hrs. There was leaking still at the neighbor’s master toilet. They came on at agreed date/tile to now do chemical injection into the ceiling of my neighbor’s ceiling which took abt 2-3 hrs. Did a good job to ensure it is clean. They came up to check on my toilet bowl to ensure the chemical injections did not choke it. We waited about 10 days for complete drying and just did another water test again as above ie 4 hrs of flooding my master toilet. All leaking at my neighbor’s master toilet ceiling is solved. This happened today. All good and very happy with the work done. Prima Seal staff are prompt, friendly, informative and punctual. Money worth spending n better re-tiling which will be damn dirty n dusty n stressful for everyone. So I will recommend them for your floor leaking problems.read more

Jason Cham

04:57 15 Apr 19

Excellent customer service, communication and after-sales service. Highly recommended company.

Zilun Dong

11:23 01 Apr 19

Primaseal did a good job for me. My pebble stone flooring is easy to absorb water and after the treatment, there is no more dripping.read more

Chris Chia

01:50 24 Jan 19

Our Master bedroom toilet was leaking to the unit below us. HDB only option was to hack my toilet. We get our previous renovation contractor to ratify the problem but was unsuccessful despite several attempts. Their final option was also to hack our toilet. We go through the internet of many waterproofing specialists, and we found good reviews and specific information of Prima Seal's Waterproofing. We decided to get them to help.The team came, surveyed the situation and provided professional advice to us and the unit below.The workers carried out the treatments in a very professional, polite and efficient manner. They even went to the unit below for further check after the chemical treatment and follow up call and inspection.We would strongly recommend Prima Seals Waterproofing for any of your water leaking problem .read more

Mai Tanbua

06:34 17 Jan 19

We have engaged PrimaSeal Waterproofing on July2018 during HDB HIP in our block. Responsive with all mu queries. However, the tricky part is I need the engagement of my neighbour downstairs which is not very cooperative. 😂 PrimaSeal solved the water leak on our master bedroom toilet and it saved us from hacking. Highly recommended, will surely engage them again in case I will encounter water leak. 👍🏻read more

Alfred yuen

05:30 12 Jan 19

Master bedroom toilet was leaking to the unit below us. HDB only option is to hack my toilet. After having read many good reviews and also getting specific information from Prima Seal's website, I decided to engage them to help me.The team came, access the situation and provided professional advice to me and the unit below. The workers who carried out the treatments were polite, efficient, and went to the unit below for further check after the chemical treatment.I would highly recommend Prima Seal for any of your water leakage problem!read more

Lynette Chiu

04:19 09 Jan 19

Prompt and professional service. Thanks much.

Sabrina Ng

08:29 02 Nov 18

The team is efficient in solving my problem. Happy to recommend to anyone who needs waterproofing service.

Ana Custodio

03:21 16 Oct 18

Highly recommended. They were very efficient and reliable. All "paper works" were processed and done electronically. Prompt and professional with their responses. The waterproofing worked and the water retest from HDB passed. yey! we were spared from fully renovating our toilet which would have brought unnecessary inconvenience and help us saved money. Thank you!read more

Ashraful Haque

19:43 14 Oct 18

They came down a few times to make sure the water leakage issues are solved. There have effective solutions for both plumbing issues and waterpoofing issues. Highly recommended for their dedicated efforts to make sure everything is done. Keep it up.read more

Abdus Salam

05:36 12 Oct 18

Prima Seal were one of the few companies that we talked to and they impressed us with their professional attitude. Our bathroom leaking issue is especially tricky but thankfully they were committed and made sure the problem is solved. Thanks!read more

H Yyr

08:51 28 Aug 18

We got a Passed today after HIP re-watertesting.I highly recommend Prima Seal as Jason and his team managed to rectify my mum's masterbedroom leaking problem - which failed months earlier for the HIP watertesting.Thank you Prima Seal.Regard, Dread more

HweeHiang Tay

09:10 03 Aug 18

My common toilet failed the HDB HIP water test and I did not want to hack my toilet to rectify the water leakage problem. After having read many good reviews and also getting specific information from Prima Seal's website, I decided to engage them to help me.My water leakage problem was a bit challenging and it took three treatments to finally rectify it and help me pass the HDB HIP water test. Throughout the process, Jason and his team were patient, committed and provided professional advice and competent service. The workers who carried out the treatments were polite and efficient, and always kept the place clean after finishing their work.I would highly recommend Prima Seal if you need a reliable company to help you with your water leakage problem!read more

Gerhard Schonstein

08:44 04 Mar 18

Right from signing-in the contract for our flat - we got a Water (soi) flat.The day we singed - heavy rain, 2 days after moving in - the first flooding because one tubing of a water heater was loose. Two years later the warm water tubing of the bathroom burst and as the sink was sealed of by the developer we got ca 4000l water flooding our living room.A few weeks later we found out that we could see water marks on the false ceiling of our kitchen and some other places. The roof got repaired by the Condo Management - but the water marks of the kitchen became larger. At the same time when we saw water dropping on the kitchen floor, (after careful analyses) coming from our balcony above, we got the information that there was a water dripping in the master-bedroom below of our roof garden. We started to search round to rectify the problems - but with the answers of the first contractors who came and looked at them we did not get a reasonable problem solution.Then I found Prima Seal via the Internet search and Jason Kuah analyzedour situation and we got for both problems a solution. The roof garden - 5 Layers Waterproofing with Fiberglass worked immediately but our upper balcony above the kitchen was too extreme damaged over time and the leaking started again a few weeks later. After one extreme heavy rain the water burst through and the kitchen was under water. Prima Seal arranged the rectification with quite some extra work including applying a new concrete layer to stop the water flow and as we saw two months later that that now worked they fixed the big hole of the artificial kitchen ceiling very nicely including painting of the damaged area Summary: Analyses of the problems - very good with personalized solution. Nice After-sales-support till the problem got solvedWould wish other contractors would do the sameGerhardread more

Sia Swee Min

00:17 20 Dec 17

Professional and good job done by Michael and his team. Keep my kitchen area clean after the waterproofing. Achieved the result we want by passing the HIP water-retest. Will not hesitate to recommend their services to others. Thank you.read more

K T

08:58 15 Nov 17

Communication was easy, appointments punctual, and work competently done. Workers were polite and careful to clean up when they were done. Passed HDB's test. Grateful for the service.read more

Erik Lai

23:03 03 Oct 17

Great services. Provide very good advise on what type of waterproofing available. Very fast and efficient. Very easy to communicate and book appointment for viewing, waterproofing works and also follow ups during waterproofing test.Very friendly workers.read more

Monica Ng

2019-11-25T06:46:44+0000

Am pleased with the service your company provides. Appreciate your responsiveness from enquiry till job completed & my waterproofing issue resolved. Thank you again- Jason & Chanread more

Emeline Wee Li Choo

2019-04-30T05:31:24+0000

Used them for the master toilet waterproofing treatment as the neighbour complain of water leak even though it was a dry toilet that we didn’t use at all. We do not wish to go through hacking , too much of hassle and mess. So we decided to try Prima Seal treatment. And Prima Seal solve the problem! Hdb called to say case closed. Leaking has stopping. They are very prompt in service and did follow up with us promptly. Appreciate their work!read more

Wei Wen Cai

2019-01-28T14:56:16+0000

My maisonette went through a hdb upgrading exercise recently and it caused my kitchen ceiling to leak from the bathroom upstairs. The ceiling had leaks in the past and I did PU injection to cure the issues. After upgrading of the spalling concrete at the same spot the leak happened again, the hdb contractors did not do much to help except to explain and push away the issues unless I hack the floor and redo the waterproofing.. I read about Prima Seal on the internet and took a leap of faith to call them. At first my family members were against using them as they require full payment before the works but I still went ahead despite the disapproval... like I said leap of faithWhy- they are punctual, on the dot at the appointment time- they explained to me the works to be done, what to expect and secondary measures if things doesn’t go as planned.- transparent on the costsI did the flooding thingy 3 weeks ago and the ceiling still leak so they did PU injection today. The situation was sticky but the guys were serious with their business and genuine people. They took my calls promptly and the after service was prompt. These guys are legit. Hopefully I don’t have to call them again!read more

Hwee Hiang

2018-08-03T09:30:17+0000

Andy Lo

2017-11-20T03:36:54+0000

Neighbour below complained of slight ceiling leak. After calling Prima Seal, they were prompt to send a specialist to check and there was indeed slight leak. The chemical infusion process (basically flooding the bathroom floor) was done on another day which took a few hours and then it was cleaned up properly by Prima. After few weeks, water test conducted by HDB contractor was passed (meaning no more leak). Great job to Prima Seal and saved me the hassle of having to hack the bathroom floor and replace the waterproofing membrane. Highly recommended!read more

Serena Ho Nina

2017-03-02T09:44:23+0000

No more water leakage. Passed water tests after water proofing works by Prima Seal. Appreciate their professional service, time and effort to do joint inspection. �read more

Chyeseng Lim

2016-12-28T09:30:37+0000

Did some search on internet on waterproofing services and chance upon PrimaSeal. Compared prices and find PrimaSeal prices reasonable. The technicians did a survey first before providing a quotation. They are young folks but experience and know what they are doing. Half a day's job and the waterproofing on my side wall and second floor ceiling latch was completed. The waterproofing method used is great.. no hacking, just chemical infusion to seal up the cracks and pores on the concrete. No more leaking during heavy rain and we are very satisfied with the work.read more

Lina Cahyadi

2016-12-27T10:55:52+0000

Michael is very professional in handling my bathroom leakage issue despite my challenging neighbor. He offered me with a good economical solution which save my hassle from doing hacking on the floor. He is a responsible person who took his personal time off to monitor the water test in the bathroom following the repair work.His operation team works efficiently (although there's some minor white spots on the flooring and toilet bowl but they are fading over time).Overall, I am happy with the service given by Michael and team. Will definitely recommend them to those in need.read more

Eileen Koh

2016-03-01T08:01:13+0000

Professional and prompt in their response. They helped me to troubleshoot the area that could potentially leak, and help in the resolution after that. Would highly recommend.read more