Foundation Replacement – GJ MacRae Foundation Repair

Block Foundation Wall Replacement (Mississauga)

gjmacrae — Fri, 14 Jun 2024 04:36:33 +0000

Excavate exterior walls by hand and install telescopic shoring to interior of joist work and shore up brick line with angle iron. Once structure is secured, excavate by hand to frost depth and remove existing foundation walls within repair area. Repair any damaged wooden joist work with fresh sistered timber and pour fresh concrete footing at frost depth.

Once footing is cured, rebuild foundation walls with 10” block from base of footing to underside of existing joist work and fill cores of block work. Once complete, parge fresh foundation walls and let cure. Once cured, prime foundation wall and apply rubberized membrane waterproofing.

Fasten drainage board from grade to footing. Backfill and power tamp soil within repair area and reinstall patio slabs. Remove interior shoring and remove and dump all debris. All labour and materials included.

Block Foundation Replacement with Brick Shoring (Hamilton)

gjmacrae — Fri, 14 Jun 2024 04:18:29 +0000

Once footing is cured, rebuild foundation walls with 10” block from base of footing to underside of existing joistwork. Once complete, parge fresh foundation walls and let cure. Once cured, prime foundation wall and apply ruberized membrane waterproofing.

Fasten drainage board from grade to footing. Replace weeping tile system within repair areas and cover with 6″ of 3/4″ clear gravel. Backfill and power tamp dirt.

Foundation Wall Replacement in Roncesvalles (Toronto)

gjmacrae — Fri, 14 Jun 2024 03:57:23 +0000

Block Foundation Wall Replacement in the Annex (Toronto)

gjmacrae — Fri, 14 Jun 2024 03:49:58 +0000

Crumbling Foundation Wall Replacement with Shoring (Hamilton)

gjmacrae — Fri, 14 Jun 2024 02:52:03 +0000

Foundation Rebuild with Outside Basement Waterproofing (Toronto)

gjmacrae — Fri, 14 Jun 2024 01:59:35 +0000

Remove concrete pad and dig down to footing by hand in specified repair areas.

Repair and rebuild all cracks and masonry voids in foundation wall below grade. Once cured, apply AB-720-38 rubberized membrane to repair area. Add a layer of mastic mesh, another layer of AB-720-38 rubberized membrane, a layer of 12m plastic and fasten drainage board to grade with termination straps and concrete anchors.

Replace weeping tile system within repair areas and cover with 6″ of 3/4″ clear gravel. Backfill and power tamp dirt. Reinstall concrete pad.

Remove and dump all debris.

Foundation Wall Rebuild with Shoring (Hamilton)

gjmacrae — Fri, 14 Jun 2024 01:47:59 +0000

Excavate exterior walls by hand and install telescopic shoring to interior of joist work. Once structure is secured, excavate by hand to frost depth and remove existing foundation walls within repair area. Repair any damaged wooden joist work with fresh sistered timber and pour fresh concrete footing at frost depth to a dimension 20” x 8“ with rear. Once footing is cured, rebuild foundation walls with 10” block from base of footing to underside of existing joist work. Once complete, parge fresh foundation walls and let cure. Once cured, prime foundation wall and apply rubberized membrane waterproofing. Fasten drainage board from grade to footing. Backfill and power tamp soil within repair area and reinstall patio slabs.

Remove interior shoring and remove and dump all debris. All labour and materials included.

Foundation Wall Replacement in High Park (Toronto)

gjmacrae — Fri, 14 Jun 2024 01:19:02 +0000

Excavate exterior walls by hand and install telescopic shoring to interior of basement. Once structure is secured, excavate by hand to frost depth and remove existing foundation walls within repair area. Repair any damaged wooden joist work with fresh sistered timber and pour fresh concrete footing at frost depth to a dimension 20” x 8“. Once footing is cured, rebuild foundation walls with 10” block from base of footing to underside of existing joist work. Once complete, parge fresh foundation walls and let cure. Once cured, prime foundation wall and apply rubberized membrane waterproofing. Fasten drainage board from grade to footing. Backfill and power tamp soil within repair area and reinstall patio slabs.

Remove interior shoring and remove and dump all debris. All labour and materials included.

Basement Underpinning with HSS and Footing Installation (Hamilton)

gjmacrae — Wed, 12 Jun 2024 16:31:19 +0000

Begin initial underpinning sections around complete perimeter of interior foundation walls in increments. Excavate underpins by hand and clean underside of footing with wire brush. Apply masonry adhesive to underside of footings. Once underpins are prepared, build and install timber forms. Forms shall accommodate positive concrete adhesion to underside of existing footings (overflow method) and allow for a void less encapsulation of existing structure to fresh underpins achieving a complete watertight seal (non-grout installation method).

Fill forms with 25 MPa concrete and install needle vibrator. Once primary underpins are completed repeat process around entire interior perimeter, staggered into pre-determined sectionals. Once full interior perimeter detail is complete, inspected and certified, prepare for complete excavation of basement floor by hand. Frame up and fasten existing furnace to joistwork. Begin excavation of debris through side access window directly to disposal bin. Once full excavation of underpinned sectionals has concluded, remove timber forms and install a complete 4” interior weeping tile system with filtercloth. Chip all loose debris from foundation walls and repair all masonry voids in existing foundation walls with S-type masonry. Once cured, fasten drainage board around complete interior perimeter from grade to base of fresh underpins.

Install sump box next to proposed services area and connect fresh 4“ weeping tile system into proposed sump box and install a 1/3hp cast iron oil cooled sump pump with check valve into sump basin. Install 8” of 3/4” clear gravel throughout entire basement floor. Once level and complete, proposed plumbing rough-in modifications are to take place (not included in below price).

Remove all debris or obstructions in way of existing beam access. Fasten timber plankage to interior joist work and install vertical iron shoring along complete length of existing beam/load bearing wall. Slowly begin lifting structure off of existing interior load bearing wall and secure the above structural load.

Once vertical structure and joist work is secured, remove existing beam/load bearing columns from basement and dispose. Install fresh vertical iron post and plates where applicable and pour specified concrete footings for post and load bearing walls. Fasten new vertical post to with approved hardware. Once full structural and plumbing inspections are completed, install a 4” concrete floor by hand and float level. Once post footings are cured, remove shoring and rest structure onto new post/footings installations. Remove and dump all debris.

Interior Underpinning and Foundation Reinforcement (Hamilton)

gjmacrae — Wed, 12 Jun 2024 16:25:08 +0000

Excavate underpin by hand and clean underside of footing with wire brush. Apply masonry adhesive to underside of footing. Once underpin is carved and prepared, build and install timber forms to accommodate a positive concrete adhesion to the underside of existing footings (non-grout, overflow method) allowing for a void less encapsulation of existing structure to fresh underpin. Fill forms with 25 MPa concrete until full and install needle vibrator. Once cured, remove timber forms. Repeat process for second underpin.

Establish location of footing and mark out on floor. Excavate to required depth. Establish soil strength, install rebar grid. Cast in place using 25 MPa concrete at minimum strength. Vibrate concrete to top of form and float to glass finish. After 48 hours, return to remove forms. Dispose of all debris.

All work(s) to be completed to engineering specifications.