You are here:

Building Homes or Extensions/bigger opening in cinder block

Advertisement

Expert: - 8/5/2008


Question
I have a garage door that is 8 ft wide X 7ft high. I would like to open this up to 9ft X 7ft to install a wider garage door. The wall is made of cinder block. Just above the door is 2 cinder blocks high before it meets the rafters. Should I cut 6 inches of each side or can I cut 12 inches off only one side, also I am not sure if there is a header above the door. What would be the best way to go about doing this project.
Thank You

Answer
Frank, the existing masonry is filled with steel and concrete to be able to span the distance.  It is a unique method of crating headers with masonry.  It will be fairly difficult to remove the grouted block.  You must have new bearing and new lintel to carry the load.  It can be done with a steel lintel or by using hairpin block with concete and steel reinforcement.  This project is well beyond DIY, consult a brick layer.

Building Homes or Extensions

All Answers

Answers by Expert:

Ask Experts

Volunteer

Dan Griffin

Expertise

I can answer almost all questions related to the total construction process. My expertise is in commercial construction, though I can field most any residential question. I have hands on experience in concrete, heavy equipment, masonry, all phases of carpentry, interior finishes, and I am fairly strong in mechanical and electrical.

Experience

I have over 20 years experience as a commercial carpenter and commercial construction superintendent. I have another 20 years experience in facility management for a major school district.

Organizations
My favorite hobby for he past 12 years has been singing bass in a The OkChorale men's barbershop chorus and the Mature Moments quartet.

Education/Credentials
I hold a Bachelor's degree in English and Math. I have completed many continuing education hours in the building trades. I hold a Master Carpenter card from the AGC, Associated General Contractors.

©2012 About.com, a part of The New York Times Company. All rights reserved.