Concrete Foundation Crack Repair: Epoxy Injection

By Aaron Kuertz

Concrete Foundation Crack Repair:  Epoxy Injection

VERTICAL CRACKING

VERTICAL CRACKING

Homeowners love how a concrete basement provides a safe, clean and dry area to store possessions or expand a home’s living space. What they don’t love is how concrete cracks. Cracks in a basement wall can let in water or signify that there is a structural problem with the foundation. Injecting a basement wall crack with epoxy will stop any water leaks and structurally repair the wall.
Epoxy Crack Injection Advantages
• Seals the crack from water
• Epoxies are stronger than concrete
• Structurally repair the concrete
All Concrete Cracks
First, the basics. All concrete basement walls crack. These cracks are due to the concrete shrinking as it cures and the water in the mix is removed. This shrinkage places stress on the concrete and to relieve that stress, the concrete cracks. The cracks will develop soon after the foundation is cast in place. The vast majority of cracks are not a sign of a structural defect with the foundation.
Structural Cracks in Concrete Basement Walls
While it is difficult to determine by looking at a basement wall crack if it is in fact a structural problem, there are a few rules to help guide you. If the crack is over ½” wide there is a chance that it is a structural crack. Horizontal cracks are almost always a structural problem. Cracks that run on a severe diagonal, especially those that start at an inside corner are usually a structural issue. It should be noted that diagonal cracks that start at the corner of a window or where the foundation “steps down” and are under ½” most likely are not a structural issue.
If you are not sure if a crack is structural in nature, an engineer can be hired for a few hundred dollars to determine it for you. The engineer may use a crack stress gauge to help in determining if it is.
Signs of a structural crack
• >1/2″ in width
• The crack is horizontal
• The crack runs on a severe diagonal
How the Concrete Basement Wall Crack is Repaired
The repairs made to a basement wall crack are performed from the inside of the basement. Epoxies are injected into the crack in a liquid form. The epoxies are a two component material that is mixed as they are injected into the crack. After mixing they will cure to form a hard and strong material to reinforce the wall. In fact, the epoxies have a higher compression and tensile strength than the concrete itself. Once the epoxy has cured the crack will not leak water.
How the Epoxy Injection is Performed
Step 1. Attach Surface Ports – Plastic injection ports are attached with a special surface paste directly over the crack. These ports are spaced every six to twelve inches.
Step 2. Seal the Crack Surface – Once the ports are attached, the rest of the crack is covered with the same special surface paste. This is not what makes the crack water proof. It merely keeps the epoxy in the crack as it reacts and hardens.
Step 3. Injecting Epoxy into the Crack – The injection process starts at the lowest surface port. A mixer that attaches to the epoxy cartridge is inserted into the port. The epoxy is in a liquid form and flows into the crack. It will flow all the way to the outside surface of the crack. Once you see the epoxy start to come out of the next port above you stop injecting into the current port and move to the one above. A plug is inserted into the first port to keep the liquid epoxy from leaking out. Proceed until all of the ports have been injected.
Epoxy Cure Time
Epoxies start to cure as soon as the two parts are mixed. They start to reach a semi-rigid gel after about 20-30 minutes. After several hours they will start to become hard. Final cure strengths are usually achieved after seven days.
Limitations
• Not for concrete block walls
• Not for use on floor cracks
This article is written by Aaron Kuertz with Applied Technologies Aaron has been in the waterproofing industry since 1998. Applied Technologies is a manufacturer and supplier to professional waterproofing contractors and homeowners in the United States. To learn more about epoxy concrete crack repair visit Applied Technologies on the web.

Concrete Foundation Crack Repair:  Epoxy Injection

Article Source: http://EzineArticles.com/?expert=Aaron_Kuertz
http://EzineArticles.com/?Repair-a-Concrete-Basement-Crack-by-Epoxy-Injection&id=2382809

Structural Foundation Cracks

Repair Foundation Cracks Before They Seriously Damage Your Home

By Matt Gallo

Cracks in your foundation are much more than simply an aesthetic issue. Whether they’ve been caused by hydrostatic pressure, soil setting, or routine shrinkage, these fissures need to be fixed immediately. The longer the breaks persist the more likely it is that your foundation will develop structural damage. Water may also seep (or gush!) into your basement through the crack, creating the possibility of mold growth, water damage, and additional structural problems!

If you have a crack, fissure, break, fracture, crevice, or other void in your foundation, it’s time to repair the damage (and preclude additional injury to your basement, foundation, and house). Depending on the nature and severity of your foundation problems, there are a number of solutions:

* Poured concrete
* Injected epoxy
* Vinyl board
* Crystalline waterproofing agents

One innovative solution is the A-1 Foundation Crack Repair method. This state-of-the-art technique was initially developed from a US Army Corps of Engineers’ dam repair process: holes are drilled into the crack at 45 degree angles along both sides and a closed cell polymer resin is sprayed into the holes. Appropriate for both structural and nonstructural repairs, this process completely seals the crack with a dynamic material able to expand and contract as needed, ensuring a long-lasting repair.

Regardless of which foundation repair method you select, it’s important to keep in mind that each has distinct advantages and disadvantages. Some create more mess than others; some require excavation around your foundation, etc. Also, you’ll want to keep in mind climate issues: if you live in an area with extreme seasonal temperatures, your foundation is constantly expanding and contracting. Any basement repair technique you choose will also need to be dynamic–able to fluctuate along with the foundation. If the material used to mend the foundation crack is not able to expand and contract, the patch won’t hold and you’ll be back where you started!

To learn more about what repair methods are best for your area and your house, contact your local [http://foundation-repair.boston-biz.com/]foundation contractors. They’ll be able to provide information and make expert recommendations regarding the ideal solution for your foundation problems. Don’t forget, you need to fix basement leaks and foundation cracks immediately, so don’t wait. Call your foundation specialist today!

Matt Gallo is a home improvement specialist and the the Internet Marketing Manager for Prospect Genius, a leading provider of [http://www.prospectgenius.com/site/services]online local advertising.

Article Source: http://EzineArticles.com/?expert=Matt_Gallo http://EzineArticles.com/?Repair-Foundation-Cracks-Before-They-Seriously-Damage-Your-Home&id=2013941

Mortgage Loans: Slower Financial Closings?

By Jennifer Hiller – Express-News

 

Mortgage rates are at an average of 5.5 percent and the federal government continues dangling a free $8,000 in front of first-time buyers — two huge incentives to get people to commit to real estate.

But those seeking a mortgage won’t find rose petals lining the path to their new front door.

Higher lending standards and newly cautious lenders mean that closing on a home is an often a slower, more paperwork-ridden process for home buyers than in recent years.

While many mortgage loans still close in a matter of a few weeks, real estate professionals say it’s not unusual for it to take much longer for buyers to line up financing.

“You can’t get decisions made on the lender’s end,” said James Gaines, research economist with the Real Estate Center at Texas A&M University. “It takes 60 days. It used to take 30 days. If you haven’t crossed every ‘t’ and dotted every ‘i’ on the paperwork, it comes back to you.”

John Flournoy, managing broker with the Phyllis Browning Co., said many San Antonio homes are taking at least 45 days to close from the time the contract is signed. The standard used to be 30 days for home inspections, appraisals and securing financing.

“A lot of lenders and mortgages companies let staff go,” Flournoy said. “They’re reluctant to add a significant number of people.”

For those who have worked in the mortgage industry for a long time, though, the more cautious lending attitude is a back-to-basics approach.

“There’s a lot more paperwork,” said Sean O’Donnell, senior mortgage counselor at Colonial Bank. “It’s just back to 1994 again.”

He tells his clients this: “For every piece of paper you give me, you have to give me three more to prove it.”

Mortgage loans can be closed within a few weeks as long as the person handling the loan is experienced enough to know what’s needed — pay stubs, several months of account statements and so on — in advance, O’Donnell said.

Other factors can slow down a closing, including lender appraisals that may not meet the contract price, scuttling a deal.

“Sometimes a buyer or seller will ask for reconsideration of value,” Flournoy said.

And Bob Gardner, CEO of Legacy Mutual Mortgage, said appraisers sometimes have a hard time finding comparable sales. “The market is stabilizing, and in some areas we’re starting to see price increases,” Gardner said. “If you have new price increases, it’s hard to find comparables to justify the new sale.”

Credit cards, too, are playing an unexpected role in home buying, even for borrowers who have been pre-approved.

Craig Loeffler, loan officer at Affiliated Bank Mortgage, has had clients partially pay down credit cards thinking it best to eliminate debt. Then the credit card company lowers their available limit, which makes it appear the person has been burning through credit. Their credit score drops prior to the closing date, and they no longer qualify for that mortgage.

“You’re worse off than when you started,” Loeffler said. “It’s the most frustrating thing. People can provide a paper trail, but they can’t do anything about this.”

His advice for buyers: wait to pay down a credit card unless your lender requests you do so.

[mappress]