MyMason's Case Studies

 Fireplace Case Studies

    Nakkertok Fireplace Surrounds

    Fireplace Surround - Old Wood to New Wood Insert

    Fireplace Surround - Old Wood to New Wood Insert

    Fireplace Fire Brick Replacement

    Fireplace Surround - Natural Stone

    Electric, Natural Stone Fireplace

    Fireplace Hearth Replacement

    Stone Fireplace

    Cultured Stone Fireplace & New Framing

    Cultured Stone Fireplace Surround

    TV Mounted on Stone Fireplace

    Restructuring Fireplace: Wood to Gas

    Drywall to Stone Fireplace

    3-sided fireplace: Cultured Stone

    Fireplace Removal, Damper Removal

 Chimneys and Brickwork Case Studies

    Chimney Repair

    Chimney Repair, Articulated Boom

    Custom Scaffold, Chimney Repair

    Lower-Chimney's Removal, Wall Restructuring

    Chimney Flue Replacement

    Concrete Chimney Cap as per Building Code

    Chimney - Sloped Side, Repair

    Chimney - Wobbly Chimney

    Brick Pillar

    Brick Garage Pillar Repair

    Window's Lintel Installation

    Brick Sill Creates Wall Damage

    Brick-to-Stone Window Sill Replacement

    Brick Retaining Wall Rebuild

 Stone Work Case Studies

    Stone Wall Rebuild

    Granite Resurfacing of Concrete Stairs

    Stone Step Rebuild

    Stone Stair Rebuild - in Winter

    Stone replaces Brick Door Sill

    Stone Retaining Wall Rebuild

    Dry-Stack Retaining Wall Rebuild

    Dry-Stack Stone Retaining Wall

    Flagstone Patio Rebuild, Expansion

    FlagStone Step Repair

    Stone Replacement

    New Interlocking Stone Walkway

    Re-setting Interlocking Walkway

    Tile Installation

 Algonquin College/MyMason Case Studies

    Cold Weather Masonry Rules

    3 New Cases Studies in 2015

    Salt and Concrete Testing

    Concrete Curing Stress Tests

    Concrete and Rebar Stress Tests

 Parging Case Studies

    Parging, Cement Board

    Parging Examples & Techniques

 Concrete Case Studies

    Broken Concrete Step

    Basement Window, Concrete Cut

    Basement Window, Concrete cut-out

    Concrete Walkway, Landing

    Concrete Stairs and Landing

    Concrete Stairs and Landing

    Concrete Countertop




    Case Study: Custom Scaffolding, Chimney Repair

        Before and After


Chimney cap replacement

The Assignment:
    Remove the old cover and cap,
    Create a new, peaked and sloped, metal cap.
    Repair joints in mortar.
    Apply sealant to flashing.

The Underlying Problems:
    The chimney cap had holes, leaked, damaged the mortar.
    The chimney's damaged joints let more water in.
    The flashing didn't have sealant in all places, and leaked.
    The flashing had one joint reversed, letting water in.


The custom scaffolding, set up by Swing N Scaff.
This isn't a do-it-yourself scaffolding job.
Regular sectional scaffolding would not work here.
Their three man crew took five hours to build it.
The cost, about $2500 for installation and removal.

The Chimney Cap, Leaks.
A tarp covers the leaking chimney cap

You can see the scaffolding comes onto the roof at two levels.

Harness and Lanyard
Although the scaffold has a fence around each level
wearing a harness and lanyard connected to the scaffold
is required. You can see the blue lanyard.


Custom Rigging of Scaffold
A special situation where gardens and a stairway below,
prevent a straight-up build using sectional scaffolding.
Here is a close-up of a joint, custom rigged.
The Leaking Cap
The chimney flue is inside this framed, metal, cover.

The screen of the cap is removed. Wasp nests are found inside.
Cap Cover Removed
The central pipe from the fireplace is exposed.

The metal cap around the pipe is now exposed, covered in rust.

Chimney Cap Off
The metal cap is now off.



Under the two metal caps....
The wood of the central structure is exposed, surrounded by brick.

This is not a common design, usually chimneys don't have wood inside.







Rookie Flashing Mistake.
The top section of flashing goes under the bottom part.
The top should go over the bottom part.

This allowed water to leak inside.



Sloped Metal Cap
A flanged opening is cut, to be sealed with fire-rated sealant.







Sealed and Capped.
The mushroom cap has a screen to keep out rodents.
The red sealant is rated for high temperatures.


This page last modified: October 9 2012