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Protecting Your Home from South Texas Flash Floods

Fact: San Antonio sees flash flood warnings an average of 15 times each year.

South Texas storms can unleash sudden torrents that turn streets into rivers and yards into ponds. Protecting your home means acting before the water arrives—and knowing how to respond when it does.

 

1. Seal Your Foundation and Walls

Flash floodwaters exploit any crack—so inspect your slab and basement walls. Apply a waterproof coating to stop floor water damage and avoid a full structural restoration later. If water finds a gap, it can force a water line break in hidden plumbing and trigger a messy burst pipe damage cleanup.

 

2. Maintain Gutters and Downspouts

Clogged gutters overflow at eaves, soaking siding and creeping under doors. Clean debris regularly, and extend downspouts at least five feet away. Proper drainage cuts down on storm and wind damage cleanup and saves you from emergency water extraction & removal when flash floods hit.

 

3. Install Backflow Preventers

When streets flood, sewer systems can reverse, pushing raw waste into homes. A backflow valve stops sewage removal & cleanup crises. This simple device saves you from health risks and repeated flood damage cleanup after heavy rains.

 

4. Elevate Appliances and Switches

Move washers, dryers, and water heaters onto blocks if your garage floods. Keep electrical outlets and the hvac discharge line repair area above expected water levels. Protected equipment avoids a shocking fire damage cleanup if wires get wet during floods.

 

5. Prepare Emergency Valves

Install easy-access shut-offs on lines serving your home’s most vulnerable areas. In a sudden water pipe break or main water line break, you’ll stop fresh floodwater at the source—preventing a larger water damage restoration job.

 

6. Use Flood Barriers and Sandbags

Deploy reusable flood panels in doorways and sandbags around low walls. These barriers cut fast-moving water before it reaches interior floors, sparing you from plumbing overflow cleanup and kitchen sink overflow caused by pressure surges in drains.

By sealing cracks, clearing gutters, and installing protective devices, San Antonio homeowners can ride out flash floods with confidence—keeping water, waste, and structural damage at bay.

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Dwyer Restoration of San Antonio
4.8
Based on 108 reviews
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S B.
15:38 14 Mar 25
Dwyer Restotation Center as my pick after talking to 4 other companies!
Dan Dwyer is an extremely detailed man and has a goal of doing excellent work in your home. Excellent communication throughout the process and all of his office staff are on the ball! Thank you so much to the Dwyer !
Patricia G
17:39 27 Jan 25
We had quite a bit of damage from a tornado/storm back in May 2024. So we needed a lot of work.
We had used Dwyer Restoration when we lived in Rockport Tx. Which was from Hurricane Harvey in 2017.
He was our Angel.
All the work then and now here in San Marcos TX. The staff and workers have done an outstanding job.
We have another project in the works now.
He is a man of word and will always leave the customer satisfied with the project.
We will continue to use Dwyer Restoration.
Brittany S.
18:23 14 Dec 24
Oh. My. Gosh. I have known about Dwyer for ages, but never in a million years did I think I would need to call a restoration company…until the day came. They were quick, professional, and EXTREMELY knowledgeable. I didn’t question for a second that they knew what they were doing, and they thoroughly answered every question I had along the way. Dwyer, I cannot thank you enough for your help during such a stressful time!
janet B.
20:21 01 Dec 24
Dwyer Restoration is an exemplary company. The staff is knowledgeable, professional and will go above and beyond to complete the job. From top to bottom this company is ready on day one. It was such a pleasure to work with each and every person at this company. I am so grateful for all of them. When disaster strikes this is the only company I want at my side. Bravo Dwyer Restoration Bravo
Julia L.
22:03 28 Oct 24
Great experience working with the Dwyer Team. I would definitely recommend them to others.
Sharon B.
15:11 24 Oct 24
The work project was well done. I was impressed that the owner made site visits even though this was a relatively small project. I appreciated the excellent communication and quality of service. I highly recommend Dwyer Restoration.
David K.
17:40 15 Oct 24
The management representative and all the service personnel were exceptionally communicative and capable.
Gary W.
19:06 04 Oct 24
I had water damage in my master bathroom. Dwyer restoration did a fantastic job fixing the damaged area to where it looks like nothing happened. Very courteous and very professional. Great to work with. I highly recommend them
Jesse S.
00:29 05 Aug 24
Dan and his entire crew were amazing. There were some hiccups along the way (had to change project managers part way through which was out of anyone’s hands). Our new project manager Edward was awesome. The one issue we had was with the subcontractor painting company. Dwyer built us beautiful new cabinets and to this day the paint job is what I would call “satisfactory.” In the end it was quite clear these painters were only going to do enough for a satisfactory job and that is where we left it because we didn’t want to have them come back for a 9th (literally) time. Dan Dwyer and Edward pushed hard to get them to fix things even going as far as to sit here and supervise while they worked. In the end the painters were just lazy and you can’t really fix that. The lesson here is absolutely use Dwyer Restoration. They are prompt, kind, fair, hardworking people and we would use them again in a heartbeat. Their internal survey got an 8/10 overall because of these painters but I do believe deserve a 5 star rating on here because they deserve your business and will not do you wrong. The second lesson is DO NOT use Carnival Painting if you actually want a quality paint job.
Jordan W.
21:35 25 Jul 24
I recently had the pleasure of working with Dwyer Restoration to address significant water damage and mold issues in my home. From start to finish, the experience was exceptional, and I couldn't be more satisfied with their service.

From the moment I contacted them, the team at Dwyer Restoration was responsive and professional. They arrived promptly for the initial assessment, thoroughly inspected the damage, and provided a clear and detailed schedule to address the issues.

The remediation work was carried out efficiently and meticulously. Their team also took great care to protect the unaffected areas of my home. I was particularly impressed with their attention to detail and commitment to quality. My cabinets were needing to be rebuilt, all drywall at the kitchen peninsula was replaced, textured, painted and caulked better than it had been previously when the home was new.

I highly recommend their services. Their professionalism, expertise, and dedication to customer satisfaction make them the best choice for home remediation needs.
Gary D.
15:13 13 Mar 23
We hired Dwyer to do a full kitchen remodel after consulting with a number of local remodel and restoration companies. Their bid was comprehensive and detailed (almost a little overwhelming). They were quick to answer questions and turn the bid back around with adjustments.

The trade workers were competent and always polite. There were a few bumps as I would have expected with any major project. Dwyer responded to each concern in a timely and fair manner. In the end we were very happy with the result and would be willing to use them again.

Some details about the project:
* removed a load-bearing column and replaced with a LVL span. This required adjusting plumbing, electrical and HVAC around the area, as well as working with the city and a structural engineer for approval.
* replaced 4' fluorescent bulb lighting with recessed LEDs.
* custom cabinets (amazing work on this!) and new counters. This included converting the kitchen island into a peninsula.
* rebuild pantry with a slightly different footprint to better utilize space.

The majority of the work was done over about 60 days, with touch-ups and adjustments going on about a month longer.
Kari P.
01:52 18 Aug 20
My neighbor ran his car through my house in December 2019. The entire left side of my house was a huge hole and destroyed. Dwyer Restoration was recommended as the "disaster specialists". I am SO GLAD I hired them out of the 7 others I had come out to give me bids. They were the absolute BEST in the business to work with. I found them to be exceptional in 3 areas specifically:
1. Communication
2. Professionalism
3. Cleanliness
There will always be bumps along the way with ANY restoration/renovation. The key is, to work with people that DO THE RIGHT THING. Dwyer ALWAYS came through no matter what and did the right thing. They handled every detail of my renovation as if it was their house and what they would want done.
Dan Dwyer held my hand throughout the entire insurance process daily and we were able to get things agreed upon due to this.
Mark Brown was my project manager and did a phenomenal job with scheduling and being there every time I called. He was a pleasure to work with and made everything seem so seamless.
Guido Krumm was the German Carpenter that did most of the work on my house. He was also a pleasure to work with. I fell blessed to have had such a knowledgeable and trustworthy person doing the work on my house.
I will ONLY hire Dwyer Restoration in the future for all of my renovation needs. I HIGHLY recommend them for your next project or disaster.
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